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Слова на букву metr-noe (2629)

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1. A structure bearing a resemblance to a woven fabric. A n. of nerve fibers or small vessels. SYN: net, rete (1). SEE ALSO: reticulum. 2. The persons in a patient's ...
Abbreviation for N-acetylneuraminic acid.
Johann E., German anatomist, 1742–1777. See N. artery.
Fred, German bacteriologist, 1869–1945. See N. reaction, N. capsular swelling.
Ernst F.C., German histologist, anatomist, and pathologist, 1834–1918. See N. sheath, Rouget-N. sheath. Franz E., German physicist, 1798–1895. See N. law. Isidor Edler von ...
neur-, neuri-, neuro-
Nerve, nerve tissue, the nervous system. [G. neuron]
1. Relating to any structure composed of nerve cells or their processes, or that on further development will evolve into nerve cells. 2. Referring to the dorsal side of the ...
Neural tube defect (NTD)
A birth defect caused by abnormal development of the neural tube. (The neural tube is the structure present during embryonic life which gives rise to the central nervous system ...
Pain along the course of a nerve. * * * Pain of a severe, throbbing, or stabbing character in the course or distribution of a nerve. SYN: neurodynia. [neur- + G. algos, pain] - ...
Neuralgia, ciliary
A distinctive syndrome of headaches, better known today as cluster headache. There are two main clinical patterns of cluster headache — the episodic and the chronic: ...
Neuralgia, facial
Severe pain, usually occurring in bursts, that emanates along the path of the trigeminal nerve. The trigeminal nerve is the chief sensory nerve of the face.
Neuralgia, migrainous
A distinctive syndrome of headaches, today better known as cluster headache. There are two main clinical patterns of cluster headache — the episodic and the chronic: ...
Neuralgia, postherpetic
Localized pain in the area of involvement of shingles that persists beyond one month. The most common complication of shingles is postherpetic neuralgia. This occurs when the ...
Neuralgia, sphenopalatine
A distinctive syndrome of headaches, better known today as cluster headache. There are two main clinical patterns of cluster headache — the episodic and the chronic: ...
Neuralgia, vidian
A distinctive syndrome of headaches, better known today as cluster headache. There are two main clinical patterns of cluster headache — the episodic and the chronic: ...
Relating to, resembling, or of the character of, neuralgia.
Resembling or of the character of neuralgia.
An instrument for measuring the rapidity of response of a nerve to any stimulus. [neur- + G. amoibe, exchange, return, answer, + metron, measure]
neuraminic acid
An aldol product of d-mannosamine and pyruvic acid, linking the C-1 of the former to the C-3 of the latter. The N- and O-acyl derivatives of n. are known as sialic acids and ...
SYN: sialidase.
Neuraminidase inhibitor
A drug that inhibits the enzyme called neuraminidase. For example, oseltamivir (Tamiflu), an antiinfluenza agent, acts by inhibiting the neuraminidase enzyme on the surface of ...
Regeneration of a nerve. [neur- + G. ana, up, again, + genesis, origin]
SYN: lamina of vertebral arch. [neur- + G. apophysis, offshoot]
The mildest type of focal nerve lesion that produces clinical deficits; localized loss of conduction along a nerve without axon degeneration; caused by a focal lesion, usually ...
The dominant action of the nervous system over the physical processes of the body. [neur- + G. arche, dominion]
An ill-defined condition, commonly accompanying or following depression, characterized by vague fatigue believed to be brought on by psychological factors. [neur- + G. astheneia, ...
Relating to, or suffering from, neurasthenia.
The axial, unpaired part of the central nervous system : spinal cord, rhombencephalon, mesencephalon, and diencephalon, in contrast to the paired cerebral hemisphere, or ...
neuraxon, neuraxone
Obsolete term for axon. [neur- + G. axon, axis]
neurectasis, neurectasia, neurectasy
The operation of stretching a nerve or nerve trunk. SYN: neurotension. [neur- + G. ektasis, extension]
Excision of a segment of a nerve. SYN: neuroectomy. [neur- + G. ektome, excision] - occipital n. excision of greater occipital nerve for the treatment of occipital neuralgia. - ...
neurectopia, neurectopy
A condition in which a nerve follows an anomalous course. [neur- + G. ektopos, fr. ek, out of, + topos, place]
SYN: neuroepithelium.
See neur-.
SYN: spermine.
A cell that enfolds one or more axons of the peripheral nervous system; in myelinated fibers its plasma membrane forms the lamellae of myelin. SYN: neurolemma, sheath of ...
SYN: schwannoma. [ neurilemma + G. -oma, tumor] - acoustic n. schwannoma arising from cranial nerve VIII. - Antoni type A n. relatively solid or compact arrangement of ...
The property, inherent in nerves, of conducting stimuli.
SYN: nervimotility.
SYN: nervimotor.
A toxic amine that is a product of decomposing animal matter ( dehydration of choline) and a poisonous constituent of mushrooms.
Obsolete term for schwannoma. - acoustic n. SYN: vestibular schwannoma.
Neurinoma, acoustic
A benign tumor that may develop on the hearing and balance nerves near the inner ear. The tumor results from an overproduction of Schwann cells — small sheet-like cells that ...
Relating to neuritis.
1. Inflammation of a nerve. 2. SYN: neuropathy. [ neuri- + G. -itis, inflammation] - adventitial n. inflammation of the sheath of a nerve. SEE ALSO: perineuritis. - ascending ...
See neur-.
The branch of medicine concerned with the direct and indirect effects of neoplasms on the nervous system, neuromuscular junction, and muscle. [ neuro- + onco- + G. logos, study]
The branch of medicine concerned with the neurological aspects of the visual apparatus.
An allergic reaction in nervous tissue.
Surgical formation of a junction between nerves.
The anatomy of the nervous system, usually specific to the central nervous system.
A joint disorder caused by loss of joint sensation. See Charcot joint. [ neuro- + G. arthron, joint, + pathos, suffering, disease]
Use of electrical stimulation to supplement activity of the nervous system.
Related to neuroaugmentation.
Neurobiological disorders
A preferred name for illnesses of the brain and nervous system that are known to be caused by genetic, metabolic, or other biological factors. Many illnesses categorized as ...
The biology of the nervous system.
The theory that nerve cell bodies may move toward, or their axons may grow toward, the area from which they receive the most stimuli. [G. neuron, nerve + bios, life + taxis, ...
An embryonic nerve cell. [ neuro- + G. blastos, germ]
A childhood tumor that arises in the adrenal gland or in tissue in the nervous system that is related to the adrenal gland. Neuroblastoma affects newborn babies and children up ...
Inflammation or disease caused by infection of the central nervous system by a member of the genus Borrelia. It is frequently a late stage in the disease process, particularly in ...
1. Relating to the nerve supply of the heart. 2. Relating to a cardiac neurosis. [ neuro- + G. kardia, heart]
Rarely used collective term for the central cavity of the cerebrospinal axis; the combined ventricles of the brain and central canal of the spinal cord. [ neuro- + G. koilos, ...
The science concerned with the chemical aspects of nervous system structure and function.
SYN: neurokeratin. [ neuro- + G. chiton, tunic]
Inflammation of the choroid, the retina, and the optic nerve.
Inflammation of the choroid and the optic nerve.
The outgrowth of axons from the central stump to bridge the gap in a cut nerve. SYN: odogenesis. [ neuro- + G. klados, a young branch]
Those bones of the skull enclosing the brain, as distinguished from the bones of the face. SYN: brain box, braincase, cranial vault, cranium cerebrale, cerebral cranium. [ ...
Developmental anomaly arising from maldevelopment of neural crest cells. [ neuro- + L. crista, crest, + G. pathos, suffering]
Infection of the brain by the larval form of the pork tapeworm Taenia solium. Neurocysticercosis is a form of cysticercosis and is the most common worm infection of the ...
SYN: neuron. [ neuro- + G. kytos, cell]
Destruction of neurons. [ neuro- + G. kytos, cell, + lysis, dissolution]
A tumor of neuronal differentiation usually intraventricular in location, consisting of sheets of cells with uniform nuclei and occasional perivascular pseudorosette ...
SYN: dendrite (1).
SYN: dendrite (1).
Scaly patches of skin on the head, lower legs, wrists, or forearms caused by a localized itch such as from an insect bite that becomes intensely irritated when scratched. ...
Pertaining to nervous energy. [ neuro- + G. dynamis, force]
SYN: neuralgia. [ neuro- + G. odyne, pain]
That central region of the early embryonic ectoderm that on further development forms the brain and spinal cord, and the neural crest cells that become the nerve cells and ...
Relating to the neuroectoderm.
SYN: neurectomy.
Disease of the brain, spinal cord, and nerves.
1. Pertaining to the anatomic and functional relationships between the nervous system and the endocrine apparatus. 2. Descriptive of cells that release a hormone into the ...
The specialty concerned with the anatomic and functional relationships between the nervous system and the endocrine apparatus.
Relating to the neuroepithelium.
Epithelial cells specialized for the reception of external stimuli. Most neuroepithelial cells, notably the hair cells of the inner ear and the receptor cells of the taste buds, ...
- neurofibrae autonomicae [TA] SYN: autonomic nerve fibers, under fiber. - neurofibrae postganglionicae SYN: postganglionic. - neurofibrae preganglionicae SYN: preganglionic ...
A filamentous structure seen with the light microscope in the nerve cell's body, dendrites, axon, and sometimes synaptic endings, as aggregations of much finer ultramicroscopic ...
Relating to neurofibrils.
A moderately firm, benign, encapsulated tumor resulting from proliferation of Schwann cells in a disorderly pattern that includes portions of nerve fibers; in ...
Hereditary disorder characterized by cafe-au-lait (light brown) coffee-with-milk spots on the skin, and a tendency to develop large tumors on the nerves, skin, and internal ...
A class of intermediate filaments found in neurons.
SYN: ganglion (1).
Relating to the innervation of the stomach.
Formation of the nervous system. [ neuro- + G. genesis, production]
Starting with or having to do with the nerves or the nervous system.
neurogenic, neurogenetic
1. Originating in, starting from, or caused by, the nervous system or nerve impulses. SYN: neurogenous. 2. Relating to neurogenesis.
SYN: neurogenic (1).
Non-neuronal cellular elements of the central and peripheral nervous system; formerly believed to be merely supporting cells but now thought to have important metabolic functions, ...
A neuroglia cell. See neuroglia. [ neuro- + G. glia, glue, + kytos, cell]
neuroglial, neurogliar
Relating to neuroglia.
SYN: gliomatosis.
The imprint on the brain substance theoretically remaining after every mental experience, i.e., the engram or physical register of the mental experience, stimulation of which ...
A method of depicting the state of a peripheral nerve, such as electrical recording or radiographic visualization by contrast media. [ neuro- + G. grapho, to write]
Descriptive of structures containing neurosecretory neurons, whose axons form no synapses with other neurons and whose axonal endings are modified to permit storage and release ...
The microscopic anatomy of the nervous system. SYN: histoneurology.
A hormone formed by neurosecretory cells and liberated by nerve impulses ( e.g., norepinephrine).
Relating to the neurohypophysis.
It is composed of the infundibulum and the nervous lobe of the hypophysis. SEE ALSO: pituitary gland. SYN: lobus nervosus [TA], lobus posterior hypophyseos, pars nervosa ...
Resembling a nerve; nervelike. [ neuro- + G. eidos, resemblance]
1. The proteinaceous network that remains of the myelin sheath of axons following fixation and the removal of the fatty material; the reticular appearance is probably a ...
SYN: neurilemma. [ neuro- + G. lemma, husk]
An intense analgesic and amnesic state produced by administration of narcotic analgesics and neuroleptic drugs; unconsciousness may or may not occur, and cardiorespiratory ...
A technique of general anesthesia based upon intravenous administration of neuroleptic drugs, together with inhalation of a weak anesthetic with or without neuromuscular ...
A term that refers to the effects of antipsychotic drugs on a patient, especially on his or her cognition and behavior. Neuroleptic drugs may produce a state of apathy, lack of ...
The branch of medical science concerned with the neuroanatomic basis of speech and its disorders.
Having to do with the nerves or the nervous system.
: A doctor who specializes in the diagnosis and treatment of disorders of the nervous system. * * * A specialist in the diagnosis and treatment of disorders of the neuromuscular ...
The medical specialty concerned with the diagnosis and treatment of disorders of the nervous system — the brain, the spinal cord, and the nerves. Thumbnail history of neurology ...
Obsolete term for cerebrospinal fluid. [ neuro- + L. lympha, clear water]
Lymphoblastic invasion of a nerve.
An antibody causing destruction of ganglion and cortical cells, obtained by the injection of brain substance. SYN: neurotoxin (1).
1. Destruction of nerve tissue. 2. Freeing of a nerve from inflammatory adhesions. [ neuro- + G. lysis, dissolution]
Relating to neurolysis.
General term for any neoplasm derived from cells of the nervous system; on the basis of newer knowledge pertaining to cytologic and histologic characteristics, a variety of ...
Neuroma, acoustic
A benign tumor that may develop on the hearing and balance nerves near the inner ear. The tumor results from an overproduction of Schwann cells — small sheet-like cells that ...
Pathologic softening of nervous tissue. [ neuro- + G. malakia, softness]
The presence of multiple neuromas, as in neurofibromatosis.
A modified form of melanin pigment normally found in certain neurons of the nervous system, especially in the substantia nigra and locus ceruleus.
Related to involvement of nervous tissue and the meninges.
Elevations in the wall of the developing neural tube that divide the developing spinal cord (n.) into portions to which dorsal and ventral roots are attached, or that divide the ...
Relating to the action of a drug that mimics the response of an effector organ to nerve impulses.
Referring to the relationship between nerve and muscle, in particular to the motor innervation of skeletal muscles and its pathology ( e.g., n. disorders). SEE ALSO: myoneural. ...
Obsolete term for muscular weakness, usually of emotional origin. [ neuro- + G. mys, muscle, + a- priv. + sthenos, strength] - epidemic n. an epidemic disease characterized by ...
Neuritis combined with spinal cord inflammation. SYN: myeloneuritis. [ neuro- + G. myelos, marrow, + -itis, inflammation] - n. optica a demyelinating disorder consisting of a ...
1. A disorder of muscle due to disorder of its nerve supply. 2. Simultaneous disorders of nerve and muscles. [ neuro- + G. mys, muscle, + pathos, disease] - carcinomatous n. n. ...
Obsolete term for polymyositis. [ neuro- + G. mys, muscle, + -itis, inflammation]
A nerve cell, the basic impulse-conducting unit of the nervous system. Neurons send and receive electrical signals over long distances within the body. A neuron may send ...
Neuron-specific enolase (NSE)
Neuron-specific enolase (NSE) is a substance that has been detected in patients with certain tumors, namely: neuroblastoma, small cell lung cancer, medullary thyroid cancer, ...
Pertaining to a neuron.
SYN: neuron.
Relating to the nerve supply of the kidney. [ neuro- + G. nephros, kidney]
A variety of intradermal nevus in adults in which nests of atrophic nevus cells in the lower dermis are hyalinized and resemble nerve bundles.
Inflammatory disorder of the neuron. - vestibular n. a paroxysmal attack of severe vertigo, not accompanied by deafness or tinnitus, which affects young to middle-aged adults, ...
Disorder, often toxic, of the neuron (1). - sensory n. n. confined to dorsal root and gasserian ganglia. - X-linked recessive bulbospinal n. SYN: Kennedy disease.
A phagocyte that ingests neuronal elements. See microglia. [neuron + G. phago, to eat]
neuronophagia, neuronophagy
Phagocytosis of nerve cells. [neuron + G. phago, to eat]
Acupuncture of a nerve. [ neuro- + G. nyxis, pricking]
A physician trained to diagnose and treat patients with brain tumors and other types of tumors of the nervous system. From neuro- + oncology and sometimes written with a hyphen ...
The branch of medicine concerned with the nervous system related to the auditory and vestibular systems.
Paralysis resulting from disease of the nerve supplying the affected part.
Denoting or characterized by neuroparalysis.
One who suffers from or is predisposed to some disease of the nervous system.
SYN: neuropathy. - n. epidemica hemorrhagic fever with renal complications; due to Puumala virus.
Relating in any way to neuropathy.
The origin or causation of a disease of the nervous system. [ neuro- + G. pathos, suffering, + genesis, origin]
A pathologist who specializes in the diagnosis of diseases of the brain and nervous system by microscopic examination of the tissue and other means.
1. Pathology of the nervous system. 2. That branch of pathology concerned with the nervous system.
Any and all disease or malfunction of the nerves. * * * 1. A classical term for any disorder affecting any segment of the nervous system. 2. In contemporary usage, a disease ...
Neuropathy, accessory
Disease of the accessory nerve which is the eleventh cranial nerve. All twelve cranial nerves, the accessory nerve included, emerge from or enter the skull (the cranium) as ...
Neuropathy, hypoglossal
Disease of the hypoglossal nerve, the twelfth cranial nerve. The twelve cranial nerves, the hypoglossal nerve included, emerge from or enter the skull (the cranium), as opposed ...
Any of a variety of peptides found in neural tissue; e.g., endorphins, enkephalins. - n. Y a 36–amino acid peptide neurotransmitter found in the brain and autonomic nervous ...
The study of drugs that affect neuronal tissue.
SYN: neurotropic. [ neuro- + G. philos, fond]
A spasm or tic of the muscles of phonation causing involuntary sounds or cries. [ neuro- + G. phone, voice]
A family of proteins synthesized in the hypothalamus as part of the large precursor protein that includes vasopressin and oxytocin in the neurosecretory granules; n. function ...
Physiology of the nervous system.
neuropil, neuropile
The complex, feltlike net of axonal, dendritic, and glial arborizations that forms the bulk of the central nervous system's gray matter, and in which the nerve cell bodies lie ...
The protoplasm of a nerve cell.
Surgery of the nerves. [ neuro- + G. plastos, formed]
Pertaining to paralysis due to nervous system disease. [ neuro- + G. plege, a stroke]
A plexus or network of nerve cells or fibers.
SYN: axon terminals, under terminal. [pl. of neuropodium or neuropodion, fr. neuro- + G. podion, little foot]
An opening in the embryo leading from the central canal of the neural tube to the exterior of the tube. [ neuro- + G. poros, pore] - anterior n. SYN: rostral n.. - caudal n. the ...
Commonly used misspelling of neurapraxia.
The specialty dealing with both organic and psychic disorders of the nervous system; earlier term for psychiatry.
neuropsychologic, neuropsychological
Pertaining to neuropsychology.
A psychologist who has completed special training in the neurobiological causes of brain disorders, and who specializes in diagnosing and treating these illnesses using a ...
A specialty of psychology concerned with the study of the relationships between the brain and behavior, including the use of psychological tests and assessment techniques to ...
Relating to neuropsychopathy.
An emotional illness of neurologic origin.
SYN: psychopharmacology.
A radiologist who specializes in the use of radioactive substances, x-rays and scanning devices for the diagnosis of diseases of the nervous system.
The clinical subspecialty concerned with the diagnostic radiology of diseases of the central nervous system, head, and neck.
A chemical factor that extends a modulatory effect on a neuron.
Obsolete term for the recurrence of neurological symptoms upon initiation of therapy, especially with antisyphilitic drugs.
An inflammation affecting the optic nerve head and the posterior pole of the retina, with cells in the nearby vitreous, usually producing a macular star. SYN: ...
Joining together, usually by suture, of the two parts of a divided nerve. SYN: nerve suture, neurosuture. [ neuro- + G. rhaphe, suture]
An operation for the relief of neuralgia, consisting of resection of one of the walls of an osseous canal traversed by the nerve and transposition of the nerve into the soft ...
A granulomatous disease of unknown etiology involving the central nervous system, usually with concomitant systemic involvement.
A sarcoma with neuromatous elements; includes neurofibrosarcoma, neurogenic sarcoma, and malignant schwannoma.
SYN: schwannoma.
The scientific disciplines concerned with the development, structure, function, chemistry, pharmacology, clinical assessments, and pathology of the nervous system.
The release of a secretory substance from the axon terminals of certain nerve cells in the brain into the circulating blood. The secretory product may be a true hormone, e.g., ...
Relating to neurosecretion.
A chronic disorder featuring irritability of the nervous system (nervousness) and characterized by anxiety and/or extreme behavior dedicated to avoid anxiety situations. * * * ...
SYN: neurovisceral. [ neuro- + G. splanchnon, a viscus]
1. Obsolete term for the plexus of neurofibrils within nerve cells. 2. Obsolete designation for the reticular layer of the retina. [ neuro- + G. spongion, small sponge]
A genus of fungi (class Ascomycetes) grown in cultures and used in research in genetics and cellular biochemistry. SYN: pink bread mold. [ neuro- + G. spora, seed]
A brain steroid, a molecule structurally similar to cortisone, progesterone and the gonadal hormones. Neurosteroids play a role in controlling anxiety and depression. ...
A device for electrical excitation of the central or peripheral nervous system.
: A physician trained in surgery of the nervous system and who specializes in surgery on the brain and other parts of the nervous system. Sometimes called a "brain surgeon." * * ...
Surgery of the nervous system. - functional n. destruction or chronic excitation of a part of the brain to treat disordered behavior or function.
SYN: neurorrhaphy.
Neurological complications in the third (tertiary) and final phase of syphilis, which involve the central nervous system and can include psychosis, pain, and loss of physical ...
Neurosyphilis, tabes
Also known as tabes dorsalis, the slowly progressive degeneration of the spinal cord that occurs in the late (tertiary) phase of syphilis a decade or more after contracting the ...
Neuronal elongation in the direction of a target. [ neuro- + taxis, arrangement]
Relating to both nerves and tendons.
A 13–amino acid peptide neurotransmitter found in synapsomes in the hypothalamus, amygdala, basal ganglia, and dorsal gray matter of the spinal cord; it plays a role in pain ...
SYN: neurectasis.
A benign myxoma of cutaneous nerve sheath origin. [ neuro- + G. theke, box, sheath, + -oma, tumor]
SYN: nerve papilla. [ neuro- + G. thele, nipple]
The search for the place(s) in the brain where religious beliefs originate. Neurotheology mixes terms and methods from science and religion in an attempt to confer the authority ...
neurotherapeutics, neurotherapy
An older term for the treatment of psychological, psychiatric, and nervous disorders.
Relating to or suffering from a neurosis. See neurosis.
The condition or psychological trait of being neurotic.
The acquisition of nervous substance; the regeneration of a nerve.
To provide with nerve substance.
A type of axon loss lesion resulting from focal peripheral nerve injury in which, at the lesion site, the nerve stroma is damaged to varying degrees, as well as the axon and ...
1. A very slender knife or needle, used for teasing apart nerve fibers in microdissection. 2. SYN: neuromere. [ neuro- + G. tome, a cutting]
Operative division of a nerve. [ neuro- + G. tome, a cutting] - retrogasserian n. SYN: trigeminal rhizotomy.
1. Relating to neurotony. 2. Strengthening or stimulating impaired nervous action. 3. An agent that improves the tone or force of the nervous system.
Poisonous to nerves or nerve tissue. (example: lead) * * * Poisonous to nervous substance.
A substance that causes damage to nerves or nerve tissue. For example, lead is a neurotoxin. * * * 1. SYN: neurolysin. 2. Any toxin that acts specifically on nervous tissue.
SYN: neurohumoral transmission.
A chemical that is released from a nerve cell which thereby transmits an impulse from a nerve cell to another nerve, muscle, organ, or other tissue. A neurotransmitter is a ...
1. Trauma of the nervous system. 2. Trauma or wounding of a nerve. SYN: neurotrosis. [ neuro- + G. trauma, injury]
Operative crushing of a nerve. [ neuro- + G. tripsis, a rubbing]
Relating to neurotrophy.
Nutrition and metabolism of tissues under nervous influence. [ neuro- + G. trophe, nourishment]
Having an affinity for the nervous system. SYN: neurophilic.
neurotropy, neurotropism
1. Affinity of basic dyes for nervous tissue. 2. The attraction of certain pathogenic microorganisms, poisons, and nutritive substances toward the nerve centers. [ neuro- + G. ...
SYN: neurotrauma (2). [ neuro- + G. trosis, a wounding]
One of the microtubules, about 24 nm in diameter, occurring in the cell body, dendrites, axon, and some synaptic endings of neurons.
A fixed or standardized vaccine virus of definite strength, obtained by continued passage through the brain of rabbits; old way to prepare rabies vaccine.
neurovaricosis, neurovaricosity
A condition marked by multiple swellings along the course of a nerve. [ neuro- + L. varix, varicosis]
Relating to both nervous and vascular systems; relating to the nerves supplying the walls of the blood vessel s, the vasomotor nerves.
SYN: neurovisceral.
Vaccine virus modified by means of passage into and growth in nervous tissue.
Referring to the innervation of the internal organs by the autonomic (visceral motor) nervous system. SYN: neurosplanchnic, neurovegetative. [ neuro- + L. viscera, the internal ...
Stage in embryonic development in which the prominent processes are the formation of the neural plate and the plate's closure to form the neural tube. [neur- + L. -ulus, small one]
Formation of the neural plate and its closure to form the neural tube. [see neurula]
Edmund von, Austrian physician, 1852–1912. See N. granules, under granule.
1. Exhibiting no positive properties; indifferent. 2. In chemistry, neither acid nor alkaline, i.e., [OH−] = [H+]. 3. Having the same number of positive and negative charges. ...
neutral red
Used as an indicator (red at pH 6.8, yellow at 8.0), as a vital dye to stain granules and vacuoles in living cells, in testing the secretion of acid by the stomach (given with a ...
1. The change in reaction of a solution from acid or alkaline to neutral by the addition of just a sufficient amount of an alkaline or of an acid substance, respectively. 2. ...
To effect neutralization.
neutro-, neutr-
Neutral. [L. neutralis, fr. neuter, neither]
A malocclusion in which there is a normal anteroposterior relationship between the maxilla and mandible; in Angle classification, a Class I malocclusion. SYN: neutral occlusion ...
An electrically neutral particle in the nuclei of all atoms (except hydrogen-1) with a mass slightly larger than that of a proton; in isolation, it has a half-life of about ...
Not enough neutrophils, neutrophils being a type of white blood cell (specifically a form of granulocyte) filled with neutrally-staining granules, tiny sacs of enzymes that help ...
Neutropenia, severe congenital (SCN)
Children born with this condition lack neutrophils (a type of white blood cell that is important in fighting infection). These children suffer frequent infections from bacteria ...
A type of white blood cell, specifically a form of granulocyte, filled with neutrally-staining granules, tiny sacs of enzymes that help the cell to kill and digest microorganisms ...
neutrophil, neutrophile
1. A mature white blood cell in the granulocytic series, formed by myelopoietic tissue of the bone marrow (sometimes also in extramedullary sites), and released into the ...
More than the normal number of neutrophils, a type of white blood cell (specifically a form of granulocyte) filled with neutrally-staining granules, tiny sacs of enzymes that help ...
1. Pertaining to or characterized by neutrophils, such as an exudate in which the predominant cells are n. granulocytes. 2. Characterized by a lack of affinity for acid or basic ...
SYN: neutropenia. [neutrophil + G. penia, poverty]
SYN: neutrophilic (2).
A phenomenon in which neutrophilic leukocytes are stimulated by a substance in such a manner that they are either attracted, and move toward it (positive n.), or they are ...
Plural of nevus. [L.]
SYN: nevus cell.
Resembling a nevus. [L. naevus, mole (nevus), + G. eidos, resemblance]
SYN: juvenile xanthogranuloma. [ nevus + G. xanthos, yellow, + endothelioma]
: A pigmented spot on the skin, such as a mole. The plural of nevus is nevi. * * * 1. A circumscribed malformation of the skin, especially if colored by hyperpigmentation or ...
New England Journal of Medicine, The
Despite its regional name, The New England Journal of Medicine (NEJM) is far from provincial. It is an eminent weekly national and international general medical journal, devoted ...

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