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Слова на букву ulce-℞ (2632)

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valvulotome
An instrument for sectioning a valve.
valvulotomy
SYN: valvotomy (1).
valyl
The radical of valine.
van Bogaert
Ludo, 20th century Belgian neurologist. See Canavan-van Bogaert- Bertrand disease, van Bogaert encephalitis.
van Buchem
Francis Steven Peter, Dutch internist, *1897. See van Buchem syndrome.
van Buren
William H., U.S. surgeon, 1819–1883. See van Buren sound, van Buren disease.
van Creveld
S., Dutch pediatrician, *1894. See Ellis-van Creveld syndrome.
van Deen
Izaak A., Dutch physiologist, 1804–1869. See van Deen test.
van den Bergh
A.A.H., Dutch physician, 1869–1943. See van den Bergh test.
van der Kolk
Jacobus L.C.S., Dutch physician, 1797–1862.
van der Spieghel
See Spigelius.
van der Velden
Reinhardt, German physician, 1851–1903. See van der Velden test.
van der Waals
Johannes D., Dutch physicist and Nobel laureate, 1837–1923. See van der Waals forces, under force.
van Ekenstein
W.A., 19th century scientist. See Lobry de Bruyn -van Ekenstein transformation.
van Ermengen
Emile P., Belgian bacteriologist, 1851–1932. See van Ermengen stain.
van Gieson
Ira, U.S. histologist and bacteriologist, 1865–1913. See van Gieson stain.
van Helmont
Jean B., Flemish physician and chemist, 1577–1644. See van Helmont mirror.
van Horne, Hoorne, Hoorn, Heurenius
Jan (Johannes), Dutch anatomist, 1621–1670. See van Horne canal.
Van Slyke
Donald D., U.S. biochemist, 1883–1971. See slyke, V. apparatus, V. formula.
van't Hoff
Jacobus H., Dutch chemist and Nobel laureate, 1852–1911. See van't Hoff equation, van't Hoff law, van't Hoff theory, Le Bel-van't Hoff rule.
Van, van
For some names with this prefix not found below, see the principal part of the name.
vanadate
A salt of vanadic acid.
vanadic acid
An acid, H3VO4, derived from vanadium, forming salts with various bases.
vanadium
A metallic element, atomic no. 23, atomic wt. 50.9415; a bioelement, its deficiency can result in abnormal bone growth and a rise in cholesterol and triacylglycerol levels. ...
vancomycin
An antibiotic isolated from cultures of Nocardia orientalis, bactericidal and bacteriostatic against Gram-positive organisms; available as the hydrochloride.
vandal root
SYN: valerian.
vanilla
The cured, full-grown, unripe fruit of Vanila planifolia (Mexican or Bourbon v.) or of V. tahitensis (Tahiti v.), orchids (family Orchidaceae) native to Mexico and cultivated in ...
vanillate
A compound of vanillic acid; C8H8O4.
vanillic acid
A flavoring agent.
vanillin
Obtained from vanilla and also prepared synthetically; a flavoring agent; used to detect ornithine, sugar alcohol s, phenols, and certain sterols.
vanillism
1. Symptoms of irritation of the skin, nasal mucous membrane, and conjunctiva from which workers with vanilla sometimes suffer. 2. Infestation of the skin by sarcoptiform mites ...
vanillylmandelic acid
Misnomer for 4-hydroxy-3-methoxymandelic acid (α,3-dihydroxy-2-methoxybenzeneacetic acid); the major urinary metabolite of adrenal and sympathetic catecholamines ( e.g., from ...
Vanishing twin
The disappearance before birth of one twin. Of all twin pregnancies, 40% result in the birth of a single child. The other twin is lost. This is the "vanishing twin" phenomenon. A ...
vapor
1. Molecules in the gaseous phase of a solid or liquid substance exposed to a gas. 2. A visible emanation of fine particles of a liquid. 3. A medicinal preparation to be ...
vaporization
1. The change of a solid or liquid to a state of vapor. 2. The therapeutic application of a vapor.
vaporize
1. To convert a solid or liquid into a vapor. 2. To apply a vapor therapeutically.
vaporizer
1. An apparatus for reducing medicated liquids to a state of vapor suitable for inhalation or application to accessible mucous membranes. SEE ALSO: nebulizer, atomizer. 2. A ...
vaporthorax
The existence of large water vapor bubbles in the pleural space between the lungs and the chest wall in an unprotected person exposed to altitudes above 63,000 ft., where the ...
vapotherapy
Treatment of disease by means of vapor or spray.
VAQTA
A vaccine against hepatitis A made of killed hepatitis A virus to stimulate the body’s immune system to produce antibodies against the hepatitis A virus.
Vaquez
Louis H., French physician, 1860–1936. See V. disease.
variability
1. The capability of being variable. 2. In genetics, the potential or actual differences, either quantitative or qualitative, in phenotype among individuals. - baseline v. of ...
variable
1. That which is inconstant, which can or does change, as contrasted with a constant. 2. Deviating from the type in structure, form, physiology, or behavior. [L. vario, to vary, ...
variance
1. The state of being variable, different, divergent, or deviate; a degree of deviation. 2. A measure of the variation shown by a set of observations, defined as the sum of ...
variant
1. That which, or one who, is variable. 2. Having the tendency to alter or change, exhibit variety or diversity, not conform with, or differ from the type. - inherited albumin ...
Variant angina
Chest pain due to coronary artery spasm, a sudden constriction of a coronary artery (one of the vessels that supply the heart muscle with blood rich in oxygen) depriving the ...
Variant Creutzfeldt-Jakob disease
Abbreviated vCJD. A human disease thought due to the same infectious agent as bovine spongiform encephalopathy (BSE), or mad cow disease. Both the human and bovine disorders ...
variate
A measurable quantity capable of taking on a number of values; may be binary ( i.e., capable of taking on two values in a certain interval of values), continuous (i.e., capable ...
variation
1. Deviation from the type, especially the parent type, in structure, form, physiology, or behavior. 2. SYN: type (3). [L. variatio, fr. vario, to change, vary] - continuous v. ...
Variation, observer
Failure by the observer to measure accurately, resulting in error. Observer variation may be due to the observer's missing a measurement, making an incorrect measurement, or ...
varication
Formation or presence of varices.
variceal
Of or pertaining to a varix.
varicella
An acute contagious disease, usually occurring in children, caused by the v.-zoster virus genus, Varicellovirus, a member of the family Herpesviridae, and marked by a sparse ...
Varicella (chickenpox) vaccination
This immunization is aimed at preventing chickenpox (varicella zoster). While chickenpox is often considered a trivial illness, it can cause significant lost time on the job ...
Varicella rash
Varicella (chickenpox) is characterized by a rash, often the first sign of the disease. The rash of chickenpox develops in crops with raised red spots arriving first, ...
varicellation
Inoculation with the virus of chickenpox as a means of protection against that disease.
varicelliform
Resembling varicella. SYN: varicelloid.
varicelloid
SYN: varicelliform.
Varicellovirus
SYN: varicella- zoster virus.
varices
Plural of varix.
variciform
Resembling a varix. SYN: cirsoid, varicoid.
varico-
A varix, varicose, varicosity. [L. varix, a dilated vein]
varicoblepharon
A varicosity of the eyelid. [ varico- + G. blepharon, eyelid]
Varicocele
Elongation and enlargement of the veins of the pampiniform plexus (the network of veins leaving the testis which join to form the testicular vein). Appears bluish through the ...
varicocelectomy
Operation for the correction of a varicocele by ligature and excision and by ligation alone of the dilated veins. [ varicocele + G. ektome, excision]
varicography
Radiography of the veins after injection of contrast medium into varicose veins. [ varico- + G. grapho, to write]
varicoid
SYN: variciform.
varicomphalus
A swelling formed by varicose veins at the umbilicus. [ varico- + G. omphalos, navel]
varicophlebitis
Inflammation of varicose veins. [ varico- + G. phleps, vein, + -itis, inflammation]
varicose
Relating to, affected with, or characterized by varices or varicosis.
varicosis
A dilated or varicose state of a vein or veins. [ varico- + G. -osis, condition]
varicosity
A varix or varicose condition.
varicotomy
An operation for varicose veins by subcutaneous incision. [ varico- + G. tome, a cutting]
varicula
A varicose condition of the veins of the conjunctiva. SYN: conjunctival varix. [L. dim. of varix]
varicule
A small varicose vein ordinarily seen in the skin; may be associated with venous stars, venous lakes, or larger varicose veins. [L. varicula, dim. of varix]
variegation
The diversification or alteration of a phenotype produced by a change in the genotype during somatic development.
variola
SYN: smallpox. [Med. L. dim of L. varius, spotted] - v. benigna SYN: varioloid (2). - v. hemorrhagica SYN: hemorrhagic smallpox. - v. major SYN: smallpox. - v. maligna ...
Variola (smallpox)
Highly contagious and frequently fatal viral disease characterized by a biphasic (double-humped) fever and a distinctive skin rash that (if the patient survived) left pock ...
variolar
Relating to smallpox. SYN: variolic, variolous.
variolate
1. To inoculate with smallpox. 2. Pitted or scarred, as if by smallpox.
variolation
The obsolete process of inoculating a susceptible person with material from a vesicle of a patient with smallpox. SYN: variolization.
variolic
SYN: variolar.
varioliform
SYN: varioloid (1). [ variola + L. forma, form]
variolization
SYN: variolation.
varioloid
1. Resembling smallpox. SYN: varioliform. 2. A mild form of smallpox occurring in persons who are relatively resistant, usually as a result of a previous vaccination. SYN: ...
variolous
SYN: variolar.
variolovaccine
A vaccine obtained from the eruption following inoculation of a heifer with smallpox from the human.
Varix
An enlarged and convoluted vein, artery or lymphatic vessel. * * * 1. A dilated vein. 2. An enlarged and tortuous vein, artery, or lymphatic vessel. [L. v. (varic-), a dilated ...
varnish
Solutions of natural resins and gums in a suitable solvent, of which a thin coating is applied over the surfaces of the cavity preparations before placement of restorations, used ...
Varolius, Varolio
Constantius (Costanzio), Italian anatomist and physician, 1543–1575. See ileal sphincter, valve of V., pons varolii.
varus
Bent or twisted inward toward the midline of the limb or body; modern accepted usage, particularly in orthopedics, erroneously transposes the meaning of valgus to v., as in genu ...
vas
A duct or canal conveying any liquid, such as blood, lymph, chyle, or semen. SEE ALSO: vessel. [L. a vessel, dish] - v. aberrans hepatis, pl. vasa aberrantia hepatis blind and/or ...
vas-
A vas, blood vessel. SEE ALSO: vasculo-, vaso-. [L. vas]
vasa
Plural of vas.
Vasa previa
A condition in which blood vessels within the placenta or the umbilical cord are trapped between the fetus and the opening to the birth canal, a situation that carries a high ...
vasal
Relating to a vas or to vasa.
Vascular
Relating to the blood vessels of the body. The blood vessels of the body, as a group, are referred to as the vascular system. The blood vessels are composed of arteries, veins and ...
Vascular bed
The vascular system, or a part thereof: for example, the pulmonary vascular bed describes the blood vessels of the lungs.
Vascular endothelial growth factor (VEGF)
A substance made by cells that stimulates new blood vessel formation, a mitogen for vascular endothelial (vessel lining) cells. VEGF is a polypeptide structurally related to ...
vascularity
The condition of being vascular.
vascularization
The formation of new blood vessel s in a part. SYN: arterialization (3).
vascularized
Rendered vascular by the formation of new vessels.
vasculature
The vascular network of an organ.
Vasculitis
Vasculitis is a general term for a group of uncommon diseases which feature inflammation of the blood vessels. The blood vessels of the body are referred to as the vascular ...
Vasculitis, allergic
A disease (also more commonly called the Churg-Straus syndrome) characterized by inflammation of the blood vessels in persons with a history of asthma or allergy. The symptoms ...
Vasculitis, retinal
The retina is the portion of the eye that contains the nerves of sensation that perceive light. It is also filled with tiny blood vessels. Vasculitis of the eye is typically the ...
vasculo-
A blood vessel. SEE ALSO: vas-, vaso-. [L. vasculum, a small vessel, dim. of vas]
vasculocardiac
SYN: cardiovascular.
vasculogenesis
Formation of the vascular system. [ vasculo- + G. genesis, production]
vasculomotor
SYN: vasomotor.
vasculomyelinopathy
Small cerebral vessel vasculopathy with subsequent perivascular demyelination, presumably due to circulating immune complexes.
vasculopathy
Any disease of the blood vessel s. [ vasculo- + G. pathos, disease]
vasculum
A small vessel. [L. dim of vas, a vessel]
vasectomy
Excision of a segment of the vas deferens, performed in association with prostatectomy, or to produce sterility. [ vas- + G. ektome, excision]
vasifaction
SYN: angiopoiesis.
vasifactive
SYN: angiopoietic.
vasiform
Having the shape of a vas or tubular structure.
vasitis
SYN: deferentitis. - v. nodosa (va-si′tis no-do′sa) an inflammatory condition of the vas deferens characterized by the presence of numerous epithelium-lined spaces with the ...
vaso-
Vas, blood vessel. SEE ALSO: vas-, vasculo-. [L. vas, a vessel]
vaso-orchidostomy
Reestablishment of the interrupted seminiferous channels by uniting the tubules of the epididymis or of the rete testis to the divided end of the vas deferens. [ vaso- + G. ...
vasoactive
Influencing the tone and caliber of blood vessel s.
Vasoconstriction
Narrowing of the blood vessels resulting from contracting of the muscular wall of the vessels. The opposite of vasodilation. * * * Narrowing of the blood vessel s. - active v. ...
vasoconstrictive
1. Causing narrowing of the blood vessel s. 2. SYN: vasoconstrictor (1).
vasoconstrictor
1. An agent that causes narrowing of the blood vessel s. SYN: vasoconstrictive (2). 2. A nerve, stimulation of which causes vascular constriction.
vasodentin
Dentin in which the primitive capillaries have remained uncalcified and so are wide enough to give passage to the formed elements of the blood. SYN: vascular dentin.
vasodepression
Reduction of tone in blood vessel s with vasodilation and resulting in lowered blood pressure.
vasodepressor
1. Producing vasodepression. 2. SYN: depressor (4).
Vasodepressor syncope
The temporary loss of consciousness in a particular kind of situation. (Syncope is temporary loss of consciousness or, in plain English, fainting). The situations that trigger ...
vasodilatation
SYN: vasodilation.
Vasodilation
Widening of blood vessels resulting from relaxation of the muscular wall of the vessels. What widens is actually the diameter of the interior (the lumen) of the vessel. The ...
vasodilative
1. Causing dilation of the blood vessel s. 2. SYN: vasodilator (1).
vasodilator
1. An agent that causes dilation of the blood vessel s. SYN: vasodilative (2). 2. A nerve, stimulation of which results in dilation of the blood vessel s.
Vasodilators
Agents that act as blood vessel dilators (vasodilators) and open vessels by relaxing their muscular walls. For example, nitroglycerin is a vasodilator. So are the ACE ...
vasoepididymostomy
Surgical anastomosis of the vasa deferentia to the epididymis, to bypass an obstruction at the level of the mid to distal epididymis or proximal vas. [ vaso- + epididymis + ...
vasofactive
SYN: angiopoietic.
vasoformation
SYN: angiopoiesis.
vasoformative
SYN: angiopoietic.
vasoganglion
A mass of blood vessel s.
vasography
Radiography of the vas deferens to determine patency, by injecting contrast medium into its lumen either transurethrally or by open vasotomy. [vas + G. grapho, to write]
vasoinhibitor
An agent that restricts or prevents the functioning of the vasomotor nerves.
vasoinhibitory
Restraining vasomotor action.
vasolabile
Characterizing the condition in which there is lability or active vasomotion of blood vessel s.
vasoligation
Ligation of the vas deferens, usually after its division.
vasomotion
Change in caliber of a blood vessel.
Vasomotor
Relating to the nerves and muscles that cause the blood vessels to constrict or dilate. * * * 1. Causing dilation or constriction of the blood vessel s. 2. Denoting the nerves ...
Vasomotor rhinitis
Inflammation of the nose (rhinitis) due to abnormal neuronal (nerve) control of the blood vessels in the nose. Vasomotor rhinitis is not allergic rhinitis.
vasoneuropathy
Any disease involving both the nerves and blood vessel s. [ vaso- + G. neuron, nerve, + pathos, suffering]
vasoparalysis
Paralysis, atonia, or hypotonia of blood vessel s. SYN: angiohypotonia, angioparalysis.
vasoparesis
A mild degree of vasoparalysis. SYN: angioparesis, vasomotor paralysis. [ vaso- + G. paresis, weakness]
Vasopressin
A relatively small (peptide) molecule that is released by the pituitary gland at the base of the brain after being made nearby (in the hypothalamus). Vasopressin has an ...
vasopressor
1. Producing vasoconstriction and a rise in blood pressure, usually understood to be systemic arterial pressure unless otherwise specified. 2. An agent that has this effect.
vasopuncture
The act of puncturing a vessel with a needle.
vasoreflex
A reflex that influences the caliber of blood vessel s.
vasorelaxation
Reduction in tension of the walls of the blood vessel s.
vasosection
SYN: vasotomy.
vasosensory
1. Relating to sensation in the blood vessel s. 2. Denoting sensory nerve fibers innervating blood vessel s.
vasospasm
Contraction or hypertonia of the muscular coats of the blood vessel s. SYN: angiohypertonia, angiospasm.
vasospastic
Relating to or characterized by vasospasm. SYN: angiospastic.
vasostimulant
1. Exciting vasomotor action. 2. An agent that excites the vasomotor nerves to action. 3. SYN: vasotonic (2).
vasostomy
Establishment of an opening into the deferent duct. [ vaso- + G. stoma, mouth]
vasothrombin
Thrombin derived from the lining cells of the blood vessel s.
vasotocin
A nonapeptide hormone of the neurohypophysis of subvertebrates, with activities similar to that of vasopressin and oxytocin; chemically identical with human vasopressin ...
vasotomy
Incision into or division of the vas deferens. SYN: vasosection. [ vaso- + G. tome, incision]
vasotonia
The tone of blood vessel s, particularly the arterioles. [ vaso- + G. tonos, tone]
vasotonic
1. Relating to vascular tone. 2. An agent that increases vascular tension. SYN: vasostimulant (3).
vasotrophic
Relating to the nutrition of the blood vessel s or the lymphatics. [ vaso- + G. trophe, nourishment]
vasotropic
Tending to act on the blood vessel s. [ vaso- + G. trope, a turning]
vasovagal
Relating to the action of the vagus nerve upon the blood vessel s.
Vasovagal attack
A reflex of the involuntary nervous system called the vasovagal reaction that leads the heart to slow down (bradycardia) and, at the same time, it affects the nerves to the blood ...
Vasovagal reaction
A reflex of the involuntary nervous system called the vasovagal reaction. The vasovagal reaction leads the heart to slow down (bradycardia) and, at the same time, it effects the ...
Vasovagal syncope
The temporary loss of consciousness in a particular kind of situation. (Syncope is temporary loss of consciousness or, in plain English, fainting). The situations that trigger ...
vasovasostomy
Surgical anastomosis of vasa deferentia, to restore fertility in a previously vasectomized male. [ vaso- + vaso- + G. stoma, mouth]
vasovesiculectomy
Excision of the vas deferens and seminal vesicles. [ vaso- + L. vesicula, vesicle, + G. ektome, excision]
vastomy
Section of the vas deferens, usually with ligation. [vas + G. tome, a cutting]
vastus
Great. See v. intermedius (muscle), v. lateralis (muscle), v. medialis (muscle). [L.]
VATER
Acronym for vertebral defects, anal atresia, tracheoesophageal fistula with esophageal atresia, and radial and renal anomalies. See V. complex.
Vater
Abraham, German anatomist and botanist, 1684–1751. See ampulla of V., V. corpuscles, under corpuscle, V. fold, V.- Pacini corpuscles, under corpuscle.
VATER association
An association of birth defects. In dysmorphology (the study of birth defects), the term "association" is the nonrandom occurrence in two or more individuals of a pattern of ...
Vater, ampulla of
A small muscle located at the junction where of the common bile duct (from the liver and pancreas) empties into the duodenum (the upper part of the small intestine). Bile from the ...
Vater, papilla of
A small muscle located at the junction where of the common bile duct (from the liver and pancreas) empties into the duodenum (the upper part of the small intestine). Bile from the ...
VATS
Abbreviation for video-assisted thoracic surgery.
vault
A part resembling an arched roof or dome, e.g., the pharyngeal v. or fornix, the nonmuscular upper part of the nasopharynx; the palatine v., arch of the plate; v. of the ...
VBAC
Vaginal Birth After Cesarian section. Although the abbreviation VBAC (pronounced VEE-back) does not appear in standard medical dictionaries, it is in active international use. ...
VC
Abbreviation for colored vision; vital capacity.
vCJD
Stands for variant Creutzfeldt-Jakob disease, a human disease thought due to the same infectious agent as bovine spongiform encephalopathy (BSE), or mad cow disease. Both the ...
VCO2
Symbol for carbon dioxide elimination.
VCUG
Abbreviation for voiding cystourethrogram.
VD
Symbol for physiologic dead space.
VDRL
Abbreviation for Venereal Disease Research Laboratories. See V. test.
VDRL test
A blood test for syphilis (VDRL stands for Venereal Disease Research Laboratory) that detects an antibody that is present in the bloodstream when a patient has syphilis. A ...
vection
Transference of the agents of disease from an infected to an uninfected individual by a vector. [L. vectio, conveyance]
vectis
An instrument resembling one of the blades of an obstetrical forceps, used as an aid in delivery by making leverge on the presenting part of the fetus. [L. a lever or bar]
Vector
In medicine, a vector is a carrier. The best way to understand a vector is to recall its origin as a word. Vector is the Latin word for a "bearer." In parasitology (the study of ...
Vector, cloning
A DNA molecule originating from a virus, a plasmid (see below) or the cell of a higher organism into which another DNA fragment can be integrated without loss of the vector's ...
vector-borne
Denoting a disease or infection that is transmitted by an invertebrate vector.
vectorcardiogram
A graphic representation of the instant-to-instant magnitude and direction of the heart's action currents in the form of vector loops.
vectorcardiography
The integration of scalar electrocardiographic recordings on two or three planes to produce a vectorcardiogram consisting of loops divided by a timing mechanism for all the ...
vectorial
Relating in any way to a vector.
vecuronium bromide
A nondepolarizing neuromuscular relaxant with a relatively short duration of action; a monoquaternary homolog of pancuronium.
VEE
Abbreviation for Venezuelan equine encephalomyelitis.
vegan
A strict vegetarian; i.e., one who consumes no animal or dairy products of any type. Cf.:vegetarian.
vegetable
1. A plant, specifically one used for food. 2. Relating to plants, as distinguished from animals or minerals. SYN: vegetal (1). [M.E., fr. L. vegetabilis (see vegetation)]
vegetal
1. SYN: vegetable (2). 2. Denoting the vital functions common to plants and animals, such as respiration, metabolism, growth, generation, etc., distinguished from those peculiar ...
vegetality
The aggregate of the vital functions common to both plants and animals.
vegetarian
One whose diet is restricted to foods of vegetable origin, excluding primarily animal meats. Cf.:vegan. - lacto- ovo-v. a v. who consumes dairy products and eggs but does not eat ...
vegetarianism
The practice as to diet of a vegetarian.
vegetation
1. The process of growth in plants. 2. A condition of sluggishness, comparable to the inactivity of plant life. 3. A growth or excrescence of any sort. 4. Specifically, a clot, ...
vegetative
1. Growing or functioning involuntarily or unconsciously, after the assumed manner of vegetable life; denoting especially a state of grossly impaired consciousness, as after ...
vegetoanimal
Relating to both plants and animals.
VEGF
Vascular endothelial growth factor, a substance made by cells that stimulates new blood vessel formation, a mitogen for vascular endothelial (vessel lining) cells. VEGF is a ...
vehicle
1. An excipient or a menstruum; a substance, usually without therapeutic action, used as a medium to give bulk for the administration of medicines. 2. An inanimate substance ( ...
veil
1. SYN: velum (1). 2. SYN: caul (1). [L. velum] - aqueduct v. a membrane obstructing the sylvian aqueduct, causing a noncommunicating hydrocephalus. - Jackson v. SYN: ...
Veillonella
A genus of nonmotile, non–spore-forming, anaerobic bacteria (family Veillonellaceae) containing small (0.3–0.5 μm in diameter), Gram-negative cocci which occur as ...
Veillonellaceae
A family of nonmotile, non–spore-forming, anaerobic bacteria (order Eubacteriales) containing Gram-negative (with a tendency to resist decolorization) cocci which vary in ...
Vein
: A blood vessel that carries blood low in oxygen content from the body back to the heart. The deoxygenated form of hemoglobin (deoxyhemoglobin) in venous blood makes it appear ...
Vein, brachial
A vein that accompanies the brachial artery between the shoulder and the elbow. The route of the brachial artery is from the shoulder down to the elbow, whereas that of the ...
Vein, central retinal
The blood vessel that carries blood away from the retina of the eye. The counterpart to the central retinal vein is the central retinal artery, the vessel that carries blood ...
Vein, external jugular
The more superficial of the two jugular veins situated on each side of the neck. The other is the internal jugular vein. They drain blood from the head, brain, face and neck and ...
Vein, femoral
The largest vein in the groin, the femoral vein is an upwards continuation of a vein lower down in the leg called the popliteal vein. The femoral vein passes beneath the inguinal ...
Vein, great saphenous
The larger of the two saphenous veins, the principal veins that run up the leg superficially (near the surface). The great saphenous vein goes from the foot all the way up to ...
Vein, hepatic
One of the veins which drains blood from the liver.
Vein, internal jugular
The deeper of the two jugular veins in the neck that drain blood from the head, brain, face and neck and convey it toward the heart. The internal jugular vein collects blood ...
Vein, jugular
The jugular veins are in the neck and drain blood from the head, brain, face and neck and convey it toward the heart. The external jugular vein collects most of the blood from ...
Vein, large saphenous
The larger of the two saphenous veins, the principal veins that run up the leg superficially (near the surface). The large saphenous vein goes from the foot all the way up to ...
Vein, mesenteric
One of the large veins which return blood from the intestines. The inferior (lower) mesenteric vein empties into the splenic vein. The superior (upper) mesenteric vein then ...
Vein, portal
A large vein that carries blood from the stomach and the intestines to the liver. The portal vein is formed by the union of the splenic and superior mesenteric veins. It ...
Vein, pulmonary
One of four vessels that carry aerated blood from the lungs to the left atrium of the heart. (The four are the right and left superior and inferior pulmonary veins). The pulmonary ...
Vein, saphenous
The saphenous veins — there are two, the great and the small saphenous veins –- are the principal veins that run superficially (near the surface) up the leg. The great ...
Vein, small saphenous
The smaller of the two saphenous veins, the principal veins that run up the leg superficially (near the surface). The small saphenous vein, runs behind the outer malleolus ...
Vein, splenic
A vein that is formed by the union of several small veins draining blood from the stomach, pancreas and spleen. The splenic vein is a major contributor to the portal vein which ...
veined
Marked by veins or lines resembling veins on the surface.
veinlet
SYN: venule.
Veins, ophthalmic
The orbital cavity is drained by paired veins called the superior and inferior ophthalmic veins. The superior ophthalmic vein arises at the inner angle of orbit and follows the ...
Vejovis
A genus of scorpions (the so-called devil scorpions of North America), including V. spinigerus, the stripe-tailed devil scorpion; V. carolinianus, the southern devil scorpion; ...
vel
or [L. or]
vela
Plural of velum.
velamen
SYN: velum (1). [L. a veil] - v. vulvae obsolete term for hypertrophy of the labia minora.
velamentous
Expanded in the form of a sheet or veil. SYN: veliform.
velamentum
SYN: velum (1). [L. a cover]
velamina
Plural of velamen.
velar
Relating to any velum, especially the velum palati.
veliform
SYN: velamentous. [L. velum, veil, + forma, form]
Vella
Luigi, Italian physiologist, 1825–1886. See V. fistula, Thiry-V. fistula.
vellicate
To twitch or contract spasmodically; said especially of fibrillary muscular spasms. [L. vellico, pp. -atus, to pluck, to twitch, fr. vello, to deprive of hair, pluck]
vellication
A fibrillary muscular spasm.
vellus
1. Fine nonpigmented hair covering most of the body. 2. A structure that is fleecy or soft and woolly in appearance. [L. fleece] - v. olivae inferioris a stratum of nerve fibers ...
Velo-cardio-facial (VCF) syndrome
Also known as Shprintzen syndrome, this is a congenital malformation (birth defect) syndrome of birth defects that include with cleft palate (velum), heart (cardio) defects, an ...
velocity
Rate of movement; specifically, distance traveled or quantity converted per unit time in a given direction. Cf.:speed. [L. velocitas, fr. velox (veloc-), quick, swift] - initial ...
velogenic
Denoting the virulence of a virus capable of inducing, after a brief incubation period, a fulminating and often lethal disease in embryonic, immature, and adult hosts; used in ...
velopharyngeal
Pertaining to the soft palate ( velum palatinum) and the pharyngeal walls.
velosynthesis
SYN: palatorrhaphy.
Velpeau
Alfred A.L.M., French surgeon, 1795–1867. See V. bandage, V. canal, V. fossa, V. hernia.
Velpeau hernia
A hernia in the groin in front of the femoral blood vessels. A hernia ("rupture") is a protrusion of tissue through the wall of a cavity in which it is normally contained.
velum
1. Any structure resembling a veil or curtain. SYN: veil (1), velamen, velamentum. 2. SYN: caul (1). 3. SYN: greater omentum. 4. Any serous membrane or membranous ...
Velvet ant sting
Common in most parts of the world including the Southern and Southwestern United States, velvet ants are not true ants but rather parasitic wasps. Their sting—like that of ...
vena
SYN: vein. [L.] - v. advehens, pl.venae advehentes collective term for a series of branching channels in the early embryo receiving blood from the umbilical and/or vitelline ...
Vena cava
The superior vena cava is the large vein which returns blood to the heart from the head, neck and both upper limbs. The inferior vena cava returns blood to the heart from the ...
Vena cava syndrome, superior
The symptoms that result from compression of the large vein that carries blood down to the heart. The superior vena cava is a large vein that transmits blood from the upper body ...
venacavography
Angiography of a vena cava. SYN: cavography.
venation
The arrangement and distribution of veins. [L. vena, vein]
vene-
1. The veins, venous. SEE ALSO: veno-. [L. vena, vein] 2. Combining form relating to venom. [L. venenum, poison]
venectasia
SYN: phlebectasia.
venectomy
SYN: phlebectomy.
veneer
1. A thin surface layer laid over a base of common material. 2. In dentistry, a layer of tooth-colored material, usually porcelain or composite resin, attached to and covering ...
venenation
Poisoning, as from a sting or bite. [L. veneno, pp. -atus, to poison, fr. venenum, poison]

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