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Слова на букву metr-noe (2629)

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necromania
1. A morbid tendency to dwell with longing on death. 2. A morbid attraction to dead bodies. [necro- + G. mania, frenzy]
necrometer
An instrument for measuring a dead body or any of its parts or organs. [necro- + G. metron, measure]
necroparasite
SYN: saprophyte.
necropathy
A tendency to tissue death or gangrene. [necro- + G. pathos, disease]
necrophagous
1. Living on carrion. 2. SYN: necrophilous. [necro- + G. phago, to eat]
necrophilia, necrophilism
1. A morbid fondness for being in the presence of dead bodies. 2. The impulse to have sexual contact, or the act of such contact, with a dead body, usually of males with female ...
necrophilous
Having a preference for dead tissue; denoting certain bacteria. SYN: necrophagous (2). [necro- + G. philos, fond]
necrophobia
Morbid fear of corpses. [necro- + G. phobos, fear]
Necropsy
A postmortem examination or autopsy. Necropsies have been done for more than 2,000 years but during most of this time they were rarely done, and then only for legal purposes. ...
necrosadism
Sexual gratification derived by mutilating corpses. [necro- + sadism]
necroscopy
Rarely used term for autopsy. [necro- + G. skopeo, to examine]
necrose
1. To cause necrosis. 2. To become the site of necrosis.
necrosectomy
Resection of necrotic tissue.
necrosis
Pathologic death of one or more cells, or of a portion of tissue or organ, resulting from irreversible damage; earliest irreversible changes are mitochondrial, consisting of ...
Necrosis, coagulation
Tissue death due to clots in the bloodstream, which block the flow of blood to the affected area.
necrospermia
A condition in which there are dead or immobile spermatozoa in the semen. [necro- + G. sperma, seed]
necrosteon, necrosteosis
Gangrene of bone. [necro- + G. osteon, bone]
necrotic
Pertaining to or affected by necrosis.
Necrotizing fasciitis
A dangerous infection of soft-tissue that starts in the subcutaneous tissue (just below the skin) and spreads along the flat layers of fibrous tissue that separate different ...
Necrotizing gingivitis
This is trench mouth, a progressive painful infection with ulceration, swelling and sloughing off of dead tissue from the mouth and throat due to the spread of infection from the ...
necrotomy
1. SYN: dissection. 2. Operation for the removal of a necrosed portion of bone (sequestrum). [necro- + G. tome, cutting] - osteoplastic n. removal of a bone sequestrum ...
needle
1. A slender, solid, usually sharp-pointed instrument used for puncturing tissues, suturing, or passing a ligature around or through a vessel. 2. A hollow n. used for injection, ...
Needle biopsy, stereotactic
A biopsy in which the spot to be biopsied is located three-dimensionally, the information is entered into a computer, and the computer calculates the information and positions a ...
needle-holder, needle-carrier, needle-driver
A hand-held instrument for grasping a needle in suturing. SYN: needle forceps.
Needles
J.W., U.S. dentist. See N. split cast method. Carl F., U.S. pediatrician, *1935. See Melnick-N. osteodysplasty, Melnick-N. syndrome.
needling
Discission of a soft or secondary cataract.
Neelsen
Friedrich K.A., German pathologist, 1854–1894. See Ziehl-N. stain.
neencephalon
Edinger term for the higher levels of the central nervous system superimposed upon the metameric or propriospinal system (paleencephalon). SYN: neoencephalon. [G. neos, new, + ...
NEEP
Abbreviation for negative end- expiratory pressure.
Nef gene
Short for negative factor gene, a gene the absence (or defect) of which diminishes the strength of a disease. The term Nef gene was coined in 1989 in respect to HIV (the human ...
nefopam hydrochloride
An analgesic agent.
Neftel
William B., U.S. neurologist, 1830–1906.
negation
SYN: denial.
negative
1. Not affirmative; refutative; not positive; not abnormal. 2. Denoting failure of response, absence of a reaction, or absence of an entity or condition in question. [L. ...
negative G
Gravity in a foot-to-head direction in flying, or in standing on one's head; opposite of positive G.
negative S
SYN: flotation constant.
Negative, false
A result that appears negative but fails to reveal a situation. An example of a false negative: a particular test designed to detect cancer of the toenail is negative but the ...
negativism
A tendency to do the opposite of what one is requested to do, or to stubbornly resist for no apparent reason; seen in catatonic states and in toddlers.
negatron
Term used for an electron to emphasize its negative charge in contradistinction to the positive charge carried by the otherwise similar positron.
Neglect, child
Child neglect is the most frequently reported form of child abuse (60% of all cases) and the most lethal. Child neglect is the failure to provide for the shelter, safety, ...
Negri
Adelchi, Italian physician, 1876–1912. See N. bodies, under body, N. corpuscles, under corpuscle.
Negro
Camillo, Italian neurologist, 1861–1927. See N. phenomenon.
NEI
Stands for National Eye Institute, one of the US National Institutes of Health. NEI’s mission is to “conduct and support research, training, health information dissemination, ...
Neisser
Albert L.S., German physician, 1855–1916. See Neisseria, N. coccus, N. syringe. Max, German bacteriologist, 1869–1938. See N. stain.
Neisseria
Group of bacteria that includes the cause of gonorrhea. * * * A genus of aerobic bacteria (family Neisseriaceae) containing Gram-negative cocci which occur in pairs with the ...
Nélaton
Auguste, French surgeon, 1807–1873. See N. catheter, N. fibers, under fiber, N. line, N. sphincter, Roser-N. line.
Nelson
Don H., U.S. internist, *1925. See N. syndrome, N. tumor.
nem
A nutritional unit defined as 1 gram breast milk of specific nutritional components having a caloric value equivalent to 23 calorie. [Ger. Nahrungseinheit Milch, milk nutrition ...
nema-, nemat-, nemato-
Thread, threadlike. [G. nema]
nemathelminth
A member of the former phylum Nemathelminthes.
Nemathelminthes
Formerly considered a phylum to incorporate the pseudocelomate organisms, which now are divided into the distinct phyla Acanthocephala, Entoprocta, Rotifera, Gastrotricha, ...
nematicidal, nematocidal
Destructive to nematode worms.
nematicide, nematocide
An agent that kills nematodes. [nematode + L. caedo, to kill]
nematization
Infestation by nematodes.
nematoblast
SYN: spermatid. [G., nema, thread + blastos, germ]
nematocyst
A stinging cell of coelenterates consisting of a poison sac and a coiled barbed sting capable of being ejected and penetrating the skin of an animal on contact; of considerable ...
Nematoda
The roundworms, a large phylum that includes many of the helminths parasitic in humans and a far greater number of plant-parasitic and free-living soil and aquatic nonparasitic ...
nematode
A common name for any roundworm of the phylum Nematoda.
nematodiasis
Infection with nematode parasites. - cerebrospinal n. invasion of the central nervous system by wandering nematode larvae; e.g., Angiostrongylus cantonensis in rats and humans. ...
Nematodirella longispiculata
One of the thread-necked trichostrongyle nematodes in the small intestine of sheep, goats, reindeer, moose, musk ox, and pronghorn.
nematoid
Relating to nematodes.
nematologist
A specialist in nematology.
nematology
The science concerned with all aspects of nematodes, their biology, and their importance to humans. [nematode + G. logos, study]
nematospermia
Spermatozoa with an elongated tail, as in humans, in contrast to spherospermia. [nemat- + G. sperma, seed]
Némethy
George, Hungarian-U.S. biochemist, *1934. See Adair-Koshland-N.- Filmer model, Koshland-N.- Filmer model.
neo-
New, recent. [G. neos]
Neo- (prefix)
Prefix meaning new. From the Greek "neos", new, young, fresh, recent. Examples of terms starting with " neo-" include neonatal and neonate (the newborn), neoplasia and neoplasm ...
neoadjuvant
Chemotherapy or radiation given before cancer surgery. [ neo- + adjuvant]
neoantigens
SYN: tumor antigens, under antigen.
neoarsphenamine
Formerly used as an antisyphilitic agent.
neoarthrosis
SYN: nearthrosis.
Neoascaris vitulorum
The large roundworm occurring in the small intestine of cattle, water buffalo, and (rarely) sheep; although uncommon in the U.S., it is a serious cattle parasite in many other ...
neobiogenesis
The theory that life can originate from nonliving matter. [ neo- + G. bios, life, + genesis, origin]
neobladder
Surgically constricted (usually using stomach or intestine) replacement for urinary bladder.
neoblastic
Developing in or characteristic of new tissue. [ neo- + G. blastos, germ, offspring]
neocerebellum
Phylogenetic term referring to the larger lateral portion of the cerebellar hemisphere receiving its dominant input from the pontine nuclei which, in turn, are dominated by ...
neochymotrypsinogen
An intermediate in the conversion of chymotrypsin to α-chymotrypsin by chymotrypsin cleavage.
neocinchophen
The ethyl ester of 6-methyl-2-phenylquinolin-4-carboxylic acid; its action and uses are similar to those of cinchophen.
neocortex
SYN: isocortex.
neocystostomy
SYN: ureteroneocystostomy. [ neo- + G. kystis, bladder, + stoma, mouth]
neodymium
One of the rare earth elements; atomic no. 60, atomic wt. 144.24. [neo-, new, + G. didymos, twin (of lanthanum)]
neoencephalon
SYN: neencephalon.
neofetal
Relating to the neofetus or to the transition between the embryonic and fetal periods of development.
neofetus
The intrauterine organism at about 8 weeks of development.
neoformation
1. Formation of neoplasia, or a neoplasm. 2. Sometimes used to indicate the process of regeneration, or a regenerated tissue or part.
neogenesis
SYN: regeneration (1). [ neo- + G. genesis, origin]
neogenetic
Pertaining to or characterized by neogenesis.
neokinetic
Denoting one of the divisions of the motor system, the function of which is the transmission of isolated synergic movements of voluntary origin; it represents a more highly ...
neolallism
Abnormal use of neologisms in speech. [ neo- + G. laleo, to chatter]
neologism
A new word or phrase of the patient's own making often seen in schizophrenia ( e.g., headshoe to mean hat), or an existing word used in a new sense; in psychiatry, such usages ...
neomorph, neomorphism
A new formation; a structure found in higher organisms, only slight or no traces of which exist in lower orders. [ neo- + G. morphe, form]
neomycin sulfate
The sulfate of an antibacterial antibiotic substance produced by the growth of Streptomyces fradiae, active against a variety of Gram-positive and Gram-negative bacteria.
neon
An inert gaseous element in the atmosphere, separated from argon by W. Ramsay and M. Travers in 1898; atomic no. 10, atomic wt. 20.1797. [G. neos, new]
Neonatal
Pertaining to the newborn period which, by convention, is the first four weeks after birth. * * * Relating to the period immediately succeeding birth and continuing through the ...
Neonatal hyperbilirubinemia
Elevation of the bilirubin level in the blood of the newborn, which results in yellowish staining of the skin and whites of the newborn’s eyes (sclerae) by pigment of bile ...
Neonatal jaundice
Yellowish staining of the skin and whites of the newborn’s eyes (sclerae) by pigment of bile (bilirubin). In newborn babies a degree of jaundice is normal. It is due to the ...
Neonatal mortality rate
The number of children dying under 28 days of age divided by the number of live births that year. The neonatal mortality rate in the United States, which was 8.4 per 1,000 live ...
Neonatal sepsis
A serious blood bacterial infection in an infant less than 4 weeks of age. Babies with sepsis may be listless, overly sleepy, floppy, weak, and very pale.
neonate
An infant aged 1 month or less. SYN: newborn. [ neo- + L. natus, born, fr. nascor, to be born]
neonatologist
One who specializes in neonatology.
Neonatology
The art and science of caring medically for the newborn. * * * The pediatric subspecialty concerned with disorders of the neonate. SYN: neonatal medicine. [ neo- + L. natus, pp. ...
neoneurotization
Rarely observed phenomenon of return of facial motor function following deliberate transection of the facial nerve; believed to represent trigeminal reinnervation of the facial ...
neopallium
SYN: isocortex.
Neophobia
Fear of anything new, of innovation, an irrational fear of new situations, places, or things. In animal behavior, neophobia refers to the tendency of an animal to avoid or ...
neoplasia
The pathologic process that results in the formation and growth of a neoplasm. [ neo- + G. plasis, a molding] - cervical intraepithelial n. dysplastic changes beginning at the ...
Neoplasm
Literally, a new growth. Neoplasm is another word for a tumor. * * * An abnormal tissue that grows by cellular proliferation more rapidly than normal and continues to grow after ...
neoplastic
Pertaining to or characterized by neoplasia, or containing a neoplasm.
neopterin
A pteridine present in body fluids; elevated levels result from immune system activation, malignant disease, allograft rejection, and viral infections (especially as in AIDS). ...
neopyrithiamin
SYN: pyrithiamin.
neoretinal b
SYN: 11-cis-retinal.
neoretinene B
SYN: 11-cis-retinol.
Neospora canium
A protozoan parasite of dogs in the phylum Apicomplexa, an intracellular cyst-forming pathogen of neural and other tissues. Its epidemiology and life history are unknown.
neostigmine
A synthetic compound, similar in action to physostigmine (eserine); a reversible cholinesterase inhibitor, used as the bromide or methylsulfate salts in the treatment of ...
neostomy
Surgical construction of a new or artificial opening. [ neo- + G. stoma, mouth]
neostriatum
striatum.
neoteny
Prolongation of the larval state, as in the Mexican tiger salamander or axolotl, or in certain termite castes held in the larval stage as future replacements of the queen. ...
Neotestudina rosati
A species of fungus that causes white grain mycetoma in Somalia and elsewhere in Africa.
neothalamus
The portion of the thalamus projecting to the neocortex.
neotyrosine
Dimethyltyrosine; a tyrosine antimetabolite.
neovascularization
Proliferation of blood vessel s in tissue not normally containing them, or proliferation of blood vessel s of a different kind than usual in tissue. - choroidal n. ingrowth of ...
neper
A unit for comparing the magnitude of two powers, usually in electricity or acoustics; it is one half of the natural logarithm of the ratio of the two powers. SYN: napier. ...
nephelometer
An instrument used in nephelometry. [G. nephele, cloud, + metron, measure]
nephelometry
A technique for estimation of the number and size of particles in a suspension by measurement of light scattered from a beam of light passed through the solution.
nephr-
See nephro-.
nephralgia
Rarely used term for pain in the kidney. [ nephr- + G. algos, pain]
nephralgic
Relating to nephralgia.
Nephrectomy
The surgical removal of a kidney. A nephrectomy can be radical, simple, or partial. The kidney, the adrenal gland, nearby lymph nodes, and other surrounding tissue are removed in ...
nephredema
Edema caused by renal disease; rarely, edema of the kidney. [ nephr- + G. oidema, swelling]
nephrelcosis
Ulceration of the mucous membrane of the pelvis or calices of the kidney. [ nephr- + G. helkosis, ulceration]
nephric
Relating to the kidney. SYN: renal.
nephridium
One of the paired, segmentally arranged excretory tubules of invertebrates such as the annelids. [G. nephros, kidney, + Mod. L. -idium, dim. suffix, fr. G. -idion]
nephritic
Relating to or suffering from nephritis.
nephritis
Inflammation of the kidneys. [ nephr- + G. -itis, inflammation] - acute n. SYN: acute glomerulonephritis. - acute interstitial n. interstitial n. with variable tubular damage ...
Nephritis, acute
Sudden inflammation of the kidney. Diagnosis is by finding blood or protein in the urine. There is often hypertension and edema (swelling).
Nephritis, infective tubulointerstitial
Inflammation of the kidney due to infection. Symptoms include nausea, pain in the kidney area, fever, and chills. Early diagnosis is essential to save the kidneys. Treatment is by ...
Nephritis, interstitial
Nephritis due to disorders of the connective tissue within the kidney, severe allergic reactions, exposure to toxic substances, transplant rejection, urinary blockage, or other ...
Nephritis, lipomatous
A disorder in which the nephrons of the kidney are gradually replaced with fatty tissues, preventing proper filtration of wastes and eventually resulting in kidney failure. ...
nephritogenic
Causing nephritis; said of conditions or agents. [ nephritis + G. genesis, production]
Nephro-
Having to do with the kidney. From the Greek nephros meaning kidney.
nephro-, nephr-
The kidney. SEE ALSO: reno-. [G. nephros, kidney]
nephroblastema
SYN: nephric blastema. [ nephro- + G. blastema, a sprout]
Nephroblastoma
A malignant tumor of the kidney in young children. Nephroblastoma is also known (better known today) as Wilms tumor. Whatever name one cares to use, it is the most common kidney ...
Nephrocalcinosis
The deposition of calcium (in the form of calcium phosphate and calcium oxalate) in the substance of the kidney, a process that can impair the function of the kidney function. ...
nephrocapsectomy
Obsolete operation for decortication, or decapsulation, of the kidney. [ nephro- + L. capsula, a small box, + G. ektome, excision]
nephrocardiac
SYN: cardiorenal. [ nephro- + G. kardia, heart]
nephrocele
1. Hernial displacement of a kidney. [ nephro- + G. kele, hernia] 2. Cavity of the nephrotome. SYN: nephrotomic cavity. [ nephro- + G. koiloma, a hollow (celom)]
nephrocystosis
Formation of renal cysts. [ nephro- + G. kystis, cyst, + -osis, condition]
nephrogenetic, nephrogenic
Developing into kidney tissue. [ nephro- + G. genesis, origin]
nephrogenous
Developing from kidney tissue.
nephrogram
1. Radiographic examination of the kidney after the intravenous injection of a water-soluble iodinated contrast material. 2. The diffuse opacification of the renal parenchyma ...
nephrography
Radiography of the kidney. [ nephro- + G. grapho, to write]
nephroid
Kidney-shaped; resembling a kidney. SYN: reniform. [ nephro- + G. eidos, resemblance]
nephrolith
SYN: renal calculus. [ nephro- + G. lithos, stone]
Nephrolithiasis
The process of forming a kidney stone, a stone in the kidney (or lower down in the urinary tract). Kidney stones are a common cause of blood in the urine and pain in the ...
nephrolithotomy
Incision into the kidney for the removal of a renal calculus. [ nephro- + G. lithos, stone, + tome, incision]
Nephrolithotripsy, percutaneous (PNL)
A technique for removing large and/or dense stones and staghorn stones. PNL is done via a port created by puncturing the kidney through the skin and enlarging the access port to 1 ...
nephrology
The branch of medical science concerned with medical diseases of the kidneys. [ nephro- + G. logos, study]
nephrolysin
An antibody that causes destruction of the cells of the kidneys, formed in response to the injection of an emulsion of renal substance; it is specific for the species from which ...
nephrolysis
1. Freeing of the kidney from inflammatory adhesions, with preservation of the capsule. 2. Destruction of renal cells. [ nephro- + G. lysis, dissolution]
nephrolytic
Pertaining to, characterized by, or causing nephrolysis. SYN: nephrotoxic (2).
nephroma
A tumor arising from renal tissue. [ nephro- + G. -oma, tumor] - mesoblastic n. a spindle cell neoplasm of the infant and, rarely, adult kidney with entrapped renal tubules.
nephromalacia
Softening of the kidneys. [ nephro- + G. malakia, softness]
nephromegaly
Extreme hypertrophy of one or both kidneys. [ nephro- + G. megas, great]
nephromere
That portion of the intermediate mesoderm from which segmented kidney tubules develop. See nephrotome. [ nephro- + G. meros, a part]
Nephron
A key unit, both anatomically and functionally, of the kidney. * * * A long convoluted tubular structure in the kidney, consisting of the renal corpuscle, the proximal ...
Nephronophthisis 1 (NPH1)
A childhood kidney disease in which there is progressive symmetrical destruction of the kidneys involving both the tubules and glomeruli, characteristically resulting in anemia, ...
nephropathia
SYN: nephropathy. - n. epidemica a generally benign form of epidemic hemorrhagic fever reported in Scandinavia.
nephropathic
Causing organic renal disease or impairment of renal function.
Nephropathy
A medical word for kidney disease. Nephropathy can be applied to any disease of the kidney. The prefix " nephro-" denotes the kidney. From the Greek " nephros" meaning kidney. ...
nephropexy
Operative fixation of a floating or mobile kidney. SEE ALSO: nephrorrhaphy. [ nephro- + G. pexis, fixation]
nephrophthisis
1. Suppurative nephritis with wasting of the substance of the organ. 2. Tuberculosis of the kidney. [ nephro- + G. phthisis, a wasting] - familial juvenile n. cystic disease ...
nephroptosis, nephroptosia
Prolapse of the kidney. [ nephro- + G. ptosis, a falling]
nephropyosis
SYN: pyonephrosis. [ nephro- + G. pyosis, suppuration]
nephrorrhaphy
Nephropexy by suturing the kidney. [ nephro- + G. rhaphe, a suture]
nephros
SYN: kidney.
Nephrosclerosis
: Hardening (sclerosis) of the kidney usually due to disease of the blood vessels in it from atherosclerosis. * * * Fibrosis of the kidney from overgrowth and contraction of the ...
nephrosclerotic
Pertaining to or causing nephrosclerosis.
nephroscope
An endoscope passed into the renal pelvis to view it. Route of access may be percutaneous, through a surgically exposed kidney, or retrograde via the ureter.
Nephrosis
Non-inflammatory, non-neoplastic disease of the kidney. Nephrosis an be caused by kidney disease, or it may be a complication of another disorder, particularly diabetes. Diagnosis ...
nephrostogram
A radiograph of the kidney after opacification of the renal pelvis by injecting a contrast agent through a nephrostomy tube. [ nephrostomy + G. gramma, writing]
nephrostoma, nephrostome
One of the ciliated funnel-shaped openings by which pronephric and some primitive mesonephric tubules communicate with the celom. [ nephro- + G. stoma, mouth]
nephrostomy
Establishment of an opening between the collecting system of the kidney through its parenchyma to the exterior of the body; may be performed by surgical incision or be placed ...
nephrotic
Relating to, caused by, or similar to nephrosis.
nephrotome
The segmented intermediate mesoderm develops into nephric primordia. [ nephro- + G. tome, a cutting]
nephrotomic
Relating to the nephrotome.
Nephrotomogram
: A series of special x-rays of the kidneys. The x-rays are taken from different angles. They show the kidneys clearly, without the shadows of the organs around them. * * * A ...
nephrotomography
Tomographic examination of the kidney.
nephrotomy
Incision into the kidney. [ nephro- + G. tome, incision] - anatrophic n. an incision into the posterolateral renal parenchyma, gaining access to the calyceal system through an ...
nephrotoxic
1. Pertaining to nephrotoxin; toxic to renal cells. 2. SYN: nephrolytic.
nephrotoxicity
The quality or state of being toxic to kidney cells.
nephrotoxin
A cytotoxin that is specific for cells of the kidney.
nephrotrophic
SYN: renotrophic.
nephrotropic
SYN: renotrophic.
nephrotuberculosis
Tuberculosis of the kidney.
nephroureterectasis
SYN: ureterohydronephrosis.
nephroureterectomy
Surgical removal of a kidney and its ureter. SYN: ureteronephrectomy. [ nephro- + ureter + G. ektome, excision]
nephroureterocystectomy
Removal of kidney, ureter, and part or all of the bladder. [ nephro- + ureter + G. kystis, bladder, + ektome, excision]
neptunium
A radioactive element; atomic no. 93; first element of the transuranian series (not found in nature); 237Np has a half-life of 2.14 × 106 years. [planet, Neptune]
neral
cis-Citral. See citral.
Néri
Vincenzo, Italian neurologist, *1882. See N. sign.
neriine
SYN: conessine.
Nernst
Walther, German physicist and Nobel laureate, 1864–1941. See N. equation.
Nerve
A bundle of fibers that uses electrical and chemical signals to transmit sensory and motor information from one body part to another. See nervous system. * * * A whitish cordlike ...
Nerve compression
“Pinching” a nerve by putting too much pressure on it. For example, the sciatic nerve may be painfully compressed by a ruptured disc in the lower spine causing sciatica. In ...
Nerve growth factor
Nerve growth factor is a substance that occurs naturally in the body which enhances the growth and survival of nerves of a certain type called cholinergic nerves.
Nerve palsy, laryngeal
Paralysis of the recurrent laryngeal nerve, a branch of the vagus nerve (a long and important nerve that originates in the brainstem and runs down to the colon). After the ...
Nerve pathways, visual
The optic nerves serving the eyes join behind the eyes just in front of the pituitary gland to form a cross-shaped structure called the optic chiasma. Within the optic chiasma ...
nerve root sleeve
In myelography, the funnel-shaped extension of the opacified subarachnoid space that surrounds each nerve root as it enters its neural foramen.
Nerve, abducent
A small motor nerve that has one task: to supply a muscle called the lateral rectus muscle that moves the eye outward. Paralysis of the abducent nerve causes inward turning of ...
Nerve, accessory
The accessory nerve is the eleventh cranial nerve. All twelve cranial nerves, the accessory nerve included, emerge from or enter the skull (the cranium) as opposed to the ...
Nerve, eighth cranial
The eighth cranial nerve is the vestibulocochlear nerve. The vestibulocochlear nerve is responsible for the sense of hearing and it is also pertinent to balance, to the body ...
Nerve, eleventh cranial
The eleventh cranial nerve is the accessory nerve. The twelve cranial nerves, the accessory nerve included, emerge from or enter the skull (the cranium) as opposed to the ...
Nerve, facial
The facial nerve is the seventh cranial nerve. It is a mixed nerve that has fibers both going out and coming in (both efferent and afferent fibers). It supplies the muscles of ...
Nerve, fifth cranial
The fifth cranial nerve is the trigeminal nerve. The trigeminal nerve is quite complex. It functions both as the chief nerve of sensation for the face and the motor nerve ...
Nerve, first cranial
The first cranial nerve is the olfactory nerve, the nerve that carries impulses for the sense of smell from the nose to the brain. The cranial nerves emerge from or enter the ...
Nerve, fourth cranial
The fourth cranial nerve, the trochlear nerve, is the nerve supply to the superior oblique muscle of the eye, one of the muscles that moves the eye. Paralysis of the trochlear ...
Nerve, glossopharyngeal
The glossopharyngeal nerve is the ninth cranial nerve. The 12 cranial nerves, the glossopharyngeal nerve included, emerge from or enter the skull (the cranium), as opposed to the ...
Nerve, hypoglossal
The hypoglossal nerve is the twelfth cranial nerve. The twelve cranial nerves, the hypoglossal nerve included, emerge from or enter the skull (the cranium), as opposed to the ...
Nerve, ninth cranial
The ninth cranial nerve is the glossopharyngeal nerve. All 12 cranial nerves, the glossopharyngeal nerve included, emerge from or enter the skull (the cranium), as opposed to the ...
Nerve, oculomotor
The oculomotor nerve is the third cranial nerve. (The cranial nerves emerge from or enter the cranium, the skull, as opposed to the spinal nerves which emerge from the ...
Nerve, olfactory
The nerve that carries impulses for the sense of smell from the nose to the brain. The olfactory nerve is the first cranial nerve. The cranial nerves emerge from or enter the ...
Nerve, optic
The optic nerve connects the eye to the brain. The optic nerve carries the impulses formed by the retina. The retina is the nerve layer that lines the back of the eye that ...
Nerve, pressor
A pressor nerve is a nerve which, when stimulated, causes the blood pressure to rise. The word "pressor" refers to raising the blood pressure. It comes from the French "presser" ...
Nerve, recurrent laryngeal
One of the best known branches of the vagus nerve, a very long nerve that originates in the brainstem. After the recurrent laryngeal nerve leaves the vagus nerve, it goes down ...
Nerve, sciatic
The largest nerve in the body, the sciatic nerve begins from nerve roots in the lumbar part of the spinal cord (in the low back) and extends through the buttock area to send ...
Nerve, second cranial
Also known as the optic nerve. This nerve connects the eye to the brain and carries the impulses formed by the back layer of the eye (retina) to the brain, which interprets them ...
Nerve, seventh cranial
The seventh cranial nerve is the facial nerve, a mixed nerve that has fibers both going out and coming in (both efferent and afferent fibers). It supplies the muscles of ...
Nerve, sixth cranial
The sixth cranial nerve is the abducent nerve, a small motor nerve that has one task: to supply a muscle called the lateral rectus muscle that moves the eye outward. Paralysis ...
Nerve, spinal
One of the nerves that originates in the spinal cord. There are 31 pairs of spinal nerves. They consist of the 8 cervical nerves, 12 thoracic nerves, 5 lumbar nerves, 5 sacral ...
Nerve, tenth cranial
The tenth cranial nerve, and one of the most important, is the vagus nerve. All twelve of the cranial nerves, the vagus nerve included, emerge from or enter the skull (the ...
Nerve, third cranial
The third cranial nerve is the oculomotor nerve. The cranial nerves emerge from or enter the skull (the cranium), as opposed to the spinal nerves which emerge from the ...
Nerve, trigeminal
This nerve functions both as the chief nerve of sensation for the face and as the motor nerve controlling the muscles of mastication (chewing). Problems with the sensory part of ...
Nerve, trochlear
The trochlear nerve controls the superior oblique muscle of the eye, one of the extraocular muscles, the muscles that move the eye. Paralysis of the trochlear nerve results in ...
Nerve, twelfth cranial
The twelfth cranial nerve is the hypoglossal nerve. The twelve cranial nerves, the hypoglossal nerve included, emerge from or enter the skull (the cranium), as opposed to the ...
Nerve, vagus
A remarkable nerve that supplies nerve fibers to the pharynx (throat), larynx (voice box), trachea (windpipe), lungs, heart, esophagus, and the intestinal tract as far as the ...
Nerve, vestibulocochlear
A nerve that is responsible for the sense of hearing and which is also pertinent to balance, to the body position sense. Problems with the vestibulocochlear nerve may result in ...
Nerves, cranial
Nerves that emerge from or enter the skull (the cranium), as opposed to the spinal nerves which emerge from the vertebral column. Cranial nerves come directly from the brain ...
nervi
Plural of nervus. [L.]
nervimotility
Capability of movement in response to a nervous stimulus. SYN: neurimotility.
nervimotion
Movement in response to a nervous stimulus.
nervimotor
Relating to a motor nerve. SYN: neurimotor.
Nervine
A nerve tonic, a medicine that acts therapeutically upon the nerves, particularly in the sense of a sedative that serves to calm ruffled nerves. The word nervine comes from the ...
nervone
A cerebroside containing a nervonyl moiety.
nervonic acid
A 24-carbon straight-chain fatty acid unsaturated between C-15 and C-16; occurs in cerebrosides such as nervone.
nervous
1. Relating to a nerve or the nerves. 2. Easily excited or agitated; suffering from mental or emotional instability; tense or anxious. 3. Formerly, denoting a temperament ...
nervous breakdown
Nonmedical term for an emotional or mental illness; often a euphemism for a psychiatric disorder.
Nervous colon syndrome
A common gastrointestinal disorder involving an abnormal condition of gut contractions (motility) characterized by abdominal pain, bloating, mucous in stools, and irregular bowel ...
Nervous system
The nervous system is the body tissue that records and distributes information in the body using electrical and chemical transmission. It has two parts. The "central" ...
Nervous system, autonomic
Part of the nervous system that was once thought to be functionally independent of the brain. The autonomic nervous system regulates key functions of the body including the ...
Nervous system, central (CNS)
That part of the nervous system that consists of the brain and spinal cord. The central nervous system (CNS) is one of the two major divisions of the nervous system. The other is ...
Nervous system, parasympathetic
A part of the nervous system that slows the heart rate, increases intestinal and gland activity, and relaxes sphincter muscles. The parasympathetic nervous system together with ...
Nervous system, peripheral (PNS)
That portion of the nervous system that is outside the brain and spinal cord. The peripheral nervous system (PNS) is one of the two major divisions of the nervous system. The ...
Nervous system, sympathetic
A part of the nervous system that accelerates the heart rate, constricts blood vessels, and raises blood pressure. The sympathetic nervous system together with the ...
nervousness
A condition of being nervous (2).
nervus
SYN: nerve. [L.] - n. abducens [CN VI] [TA] SYN: abducent nerve [CN VI]. - n. accessorius [CN XI] [TA] SYN: accessory nerve [CN XI]. - n. acusticus SYN: vestibulocochlear ...
nesidiectomy
Excision of islet tissue of the pancreas. [G. nesidion, islet, dim. of nesos, island, + ektome, excision]
nesidioblast
A pancreatic islet-forming cell. [G. nesidion, dim. of nesos, island, + blastos, germ]
nesidioblastosis
Hyperplasia of the cells of the islets of Langerhans. [ nesidioblast + G. -osis, tumor]
Nessler
A., German chemist, 1827–1905. See N. reagent.
nesslerize
To treat with Nessler reagent; used in the determination of urea nitrogen in the blood and in the urine.
nest
A group or collection of similar objects. SEE ALSO: nidus. [A.S.] - Brunn n. glandlike invagination of surface transitional epithelium in the epithelium of the lower urinary ...
net
SYN: network (1). - Chiari n. abnormal fibrous or lacelike strands in the right atrium, extending from the margins of the coronary or caval valves and attaching to the atrial ...
Netherton
Earl W., 20th century U.S. dermatologist. See N. syndrome.
netilmicin sulfate
A parenteral aminoglycoside antibiotic used for short-term treatment of serious or life-threatening bacterial infections.
nettle
SYN: urtica. [A.S. netele]

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