Copy of `Dorland's Medical Dictionary`

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Dorland's Medical Dictionary Category: Health and Medicine > Medical Dictionary Date & country: 31/12/2010, USA Words: 39128

venulitis
(ven″u-li´tis) inflammation of the venules. cutaneous necrotizing venulitis a necrotizing vasculitis affecting the venules of the skin, usually of the extremities, caused by deposition of circulating immune complexes and usually occurring in association with infection, chro...

VePesid
(ve″pe´sid) trademark for a preparation of etoposide, an antineoplastic agent.

verapamil
(vә-rap´ә-mil) a calcium channel blocking agent used as the hydrochloride salt as a coronary vasodilator in the treatment of angina pectoris and of hypertension and the treatment and prophylaxis of supraventricular tachyarrhythmias.

verbigeration
(vәr-bij″әr-a´shәn) stereotypy in speech; stereotyped and meaningless repetition of words and phrases, as seen in some cases of schizophrenia; see also perseveration and logorrhea. Called also cataphasia.

verge
(vurj) a circumference or ring. anal verge anocutaneous line.

vergence
(vur´jәns) disjunctive movement of the eyes in opposite directions in adjusting to near or far vision; convergence or divergence.

vermicide
(vur´mĭ-sīd) anthelmintic (def. 2).

vermicular
(vәr-mik´u-lәr) wormlike in shape or appearance.

vermicular movement
peristalsis.

vermiculation
(vәr-mik″u-la´shәn) wormlike movement. peristalsis.

vermiculous
(vәr-mik´u-lәs) vermicular. verminous.

vermiform
(vur´mĭ-form) vermicular.

vermifugal
(vәr-mif´u-gәl) anthelmintic (def. 1).

vermifuge
(vur´mĭ-fūj) anthelmintic (def. 2).

vermilionectomy
(vәr-mil″yon-ek´tә-me) excision of the vermilion border of the lip.

vermin
(vur´min) an external animal parasite; such parasites collectively.

verminous
(vur´mĭ-nәs) pertaining to, due to, or abounding in worms or in vermin.

vermis
(vur´mis) Latin word meaning worm. In anatomy, it is used for a wormlike structure, particularly the vermis cerebelli. vermis cerebelli , vermis of cerebellum the median part of the cerebellum, between the two cerebellar hemispheres.

Vermox
(vur´moks) trademark for a preparation of mebendazole, an anthelmintic.

Verner-Morrison syndrome
(vur´nәr mor´ĭ-sәn) a rare syndrome of profuse watery diarrhea, hypokalemia, and achlorhydria, usually associated with excess levels of vasoactive intestinal polypeptide resulting from a VIPoma in the pancreas; called also pancreatic cholera.

Vernet syndrome
(vār-na´) paralysis of the glossopharyngeal, vagus, and spinal accessory nerves due to a lesion in the region of the jugular foramen.

Verneuil disease
(vār-nwe´) hidradenitis suppurativa.

vernix
(vur´niks) Latin word meaning varnish. vernix caseosa the thick white substance composed of sebum and desquamated epithelial cells that provides a protective covering for the skin of the fetus. In the full-term newborn, during the first two or three days of life there is a small ...

Vero cells
a cell line derived from African green monkey kidney cells, used in the isolation of viruses.

Verocay bodies
small groups of fibrils surrounded by rows of palisaded nuclei, seen in schwannomas.

verruca
(vә-roo´kә) Latin word meaning wart. one of the wartlike elevations on the endocardium in various types of endocarditis. adj., ver´rucose, verru´cous., adj. verruca plana a small, smooth, usually skin-colored or light brown, slightly raised wart sometime...

verruciform
(vә-roo´sĭ-form) wartlike.

verrucous carcinoma
a type of squamous cell carcinoma having a predilection for the buccal mucosa but also affecting other oral soft tissue and the larynx; it is slow-growing and somewhat invasive. Buschke-Löwenstein tumor, so called because it is histologically similar to the oral lesion.

verruga
(vә-roo´gә) wart. verruga peruana the second or chronic stage of bartonellosis (def. 2), consisting of a hemangioma-like tumor or nodule.

version
(vur´zhәn) the act of turning; especially the manual turning of the fetus in delivery.

vertebra
(vur´tә-brә) any of the separate segments comprising the vertebral column; there are normally 33 of them, differing in size and structure according to location. The sacral vertebrae fuse to form the sacrum, and the coccygeal vertebrae fuse to form the coccyx.

vertebra plana
(vur´tә-brә pla´nә) a condition of spondylitis in which the body of the vertebra is reduced to a disk.

vertebral
(ver´tә-brәl) (vәr-te´brәl) of or pertaining to a vertebra.

vertebral arch
the dorsal bony arch of a vertebra, composed of the laminae and pedicles of a vertebra. Vertebral arch, consisting anteriorly of a pair of pedicles and posteriorly of a pair of laminae.

vertebral artery
origin, subclavian artery; it is divided into four parts: first or prevertebral part,second or cervical part,third or atlantal part, and fourth or intracranial part;branches, (cervical part) spinal and muscular branches; (intracranial part) anterior spinal artery and posterior inferior cerebellar artery and its branches, mening...

vertebral arthritis
inflammation involving the intervertebral disks.

vertebral body
the anterior cylindrical part of a vertebra,which contains part of the vertebral arches and the facets for the heads of the ribs.

vertebral canal
spinal canal.

vertebral column
the rigid bony structure in the midline of the back, composed of the vertebrae, usually 24 in number. It is the axis of the skeleton; the skull and limbs are in a sense appendages. The vertebrae also provide the protective bony corridor (spinal canal) through which the spinal cord passes; they can move to a certain extent and so give...

vertebral foramen
the large opening in a vertebra formed by its body and its arch.

vertebral lamina
either of the pair of broad plates of bone flaring out from the pedicles of the vertebral arches and fusing together at the midline to complete the dorsal part of the arch and provide a base for the spinous process of the vertebra.

vertebral nerve
origin, cervicothoracic and vertebral ganglia; distribution, ascends with vertebral artery and gives fibers to spinal meninges, cervical nerves, and posterior cranial fossa; modality, sympathetic.

vertebral ribs
floating ribs.

vertebral vein
a vein that arises from the suboccipital venous plexus, passes with the vertebral artery through the foramina of the transverse processes of the upper six cervical vertebrae, and opens into the brachiocephalic vein.

Vertebrata
(vur″tә-bra´tә) a subphylum of the Chordata, comprising all animals having a vertebral column, including mammals, birds, reptiles, amphibians, and fishes.

vertebrate
(vur´tә-brāt) having a vertebral column. any member of the Vertebrata; an animal with a vertebral column.

vertebrectomy
(vur″tә-brek´tә-me) excision of a vertebra.

vertebrobasilar
(vur″tә-bro-bas´ĭ-lәr) pertaining to or affecting the vertebral and basilar arteries.

vertebrobasilar insufficiency
vertebrobasilar syndrome transient or intermittent ischemia of the brain stem and cerebellum due to stenosis, thrombosis, or other obstruction of the vertebral or basilar artery; this results in symptoms such as vertigo, diplopia, nystagmus, muscle weakness, and dysarthria. A similar but more severe syndrome consists of pa...

vertebrochondral
(vur″tә-bro-kon´drәl) pertaining to a vertebra and a costal cartilage.

vertebrocostal
(vur″tә-bro-kos´tәl) pertaining to a vertebra and a rib.

vertebrocostal ribs
the three upper false ribs on either side, attached to vertebrae and costal cartilages.

vertebrogenic
(vur″tә-bro-jen´ik) arising in a vertebra or in the spinal column.

vertebrosternal
(vur″tә-bro-stur´nәl) pertaining to a vertebra and the sternum.

vertebrosternal ribs
true ribs.

verteporfin
(vur″tә-por´fin) a photosensitizing agent that accumulates preferentially in neovasculature, including that in the choroid, such as occurs in age-related macular degeneration, ocular histoplasmosis, or pathologic myopia; the agent is then activated by light of a specific wavelength in the presence of oxygen,...

vertex
(vur´teks) the summit or top, especially the top of the head (ver´tex cra´nii).

vertex presentation
the presentation of the vertex of the fetal head in labor.

vertical
(vur´tĭ-kәl) perpendicular to the plane of the horizon. relating to the vertex. spreading from one generation to another; see vertical transmission.

vertical diplopia
diplopia in which one image appears above the other in the same vertical plane.

vertical mattress suture
a suture whose stitches are at right angles to the edges of the wound, taking both deep and superficial bites of tissue; the superficial ones achieve more exact apposition of the cutaneous margins. When the suture material is pulled tight, the wound edges evert.

vertical muscle of tongue
origin, dorsal fascia of tongue; insertion, sides and base of tongue; innervation, hypoglossal nerve; action, changes shape of tongue in chewing and swallowing.

vertical nystagmus
involuntary up-and-down movement of the eyes.

vertical plane
one perpendicular to a horizontal plane, such as a sagittal plane, median plane, or frontal plane.

vertical strabismus
that in which the squinting eye deviates upward or downward; see hypertropia and hypotropia.

verticalis
(vur″tĭ-ka´lis) Latin word meaning vertical; a term used in anatomy.

verticillate
(vәr-tis´ĭ-lāt) arranged in whorls.

verticosubmental position
the position of the head for a verticosubmental projection.

vertigo
(vur´tĭ-go) a sensation of rotation or movement of one's self (subjective vertigo) or of one's surroundings (objective vertigo) in any plane. The term is sometimes used erroneously as a synonym for dizziness. Vertigo may result from diseases of the inner ear or may be due to disturbances of the vestibular centers o...

vertigraphy
(vәr-tig´rә-fe) body-section radiography.

verumontanum
(ver″u-mon-ta´nәm) seminal colliculus.

very low birth weight
(VLBW) see very low birth weight infant.

very low birth weight (VLBW) infant
one that weighs less than 1000 grams at birth. Low-birth-weight and very-low-birth-weight infants require special care and support, preferably in a neonatal intensive care unit (NICU), until sufficient weight is gained and the infants have matured and are able to thrive without elaborate support systems.

very-low-density lipoprotein
(VLDL) a class of lipoproteins that transport triglycerides from the intestine and liver to fatty and muscle tissues. They are synthesized by the liver and contain primarily triglycerides in their lipid cores. As their triglycerides are cleaved by lipoprotein lipase and transferred to tissues outside the liver, the VLDL...

vesalian bone
the proximal (closer to the ankle, farther from the toe) and outer part of the tuberosity of the fifth metatarsal bone.

vesalian vein
an emissary vein connecting the cavernous sinus with the pterygoid venous plexus.

vesalianum
(vә-sa″le-a´nәm) a sesamoid bone in the tendon of origin of the gastrocnemius muscle, or in the angle between the cuboid and fifth metatarsal bones.

vesica
(vә-si´kә) Latin word meaning bladder; a term used in anatomy. adj., ves´ical, adj. .

vesical calculus
a urinary calculus in the urinary bladder. Called also bladder calculus.

vesical glands
mucous glands sometimes found in the wall of the urinary bladder, especially in the area of the trigone.

vesical hernia
herniation of the urinary bladder; see cystocele and exstrophy of the bladder.

vesical reflex
bladder reflex.

vesical schistosomiasis
urinary schistosomiasis.

vesical veins
veins passing from the vesical plexus to the internal iliac vein.

vesicant
(ves´ĭ-kәnt) producing blisters. a chemical that does this.

vesication
(ves″ĭ-ka´shәn) vesiculation.

vesicle
(ves´ĭ-kәl) a small bladder or sac containing liquid. a small circumscribed elevation of the epidermis containing a serous fluid; a small blister.

vesicocervical
(ves″ĭ-ko-sur´vĭ-kәl) pertaining to or communicating between the urinary bladder and the cervix uteri or cervical canal. Called also cervicovesical.

vesicoclysis
(ves″ĭ-kok´lĭ-sis) introduction of fluid into the bladder.

vesicoenteric
(ves″ĭ-ko-en-ter´ik) enterovesical.

vesicoenteric fistula
vesicointestinal fistula enterovesical fistula.

vesicointestinal
(ves″ĭ-ko-in-tes´tĭ-nәl) enterovesical.

vesicointestinal reflex
inhibition of intestinal motility due to irritation of the bladder.

vesicoprostatic
(ves″ĭ-ko-pros-tat´ik) pertaining to the bladder and prostate.

vesicopubic
(ves″ĭ-ko-pu´bik) pertaining to the bladder and pubes; called also pubovesical.

vesicosigmoidostomy
(ves″ĭ-ko-sig″moi-dos´tә-me) surgical creation of an opening between the urinary bladder and the sigmoid colon.

vesicospinal
(ves″ĭ-ko-spi´nәl) pertaining to the bladder and spine.

vesicostomy
(ves″ĭ-kos´tә-me) surgical creation of an opening into the bladder. Called also cystostomy. cutaneous vesicostomy surgical anastomosis of the bladder mucosa to an opening in the skin below the umbilicus, creating a stoma for bladder drainage.

vesicotomy
(ves″ĭ-kot´ә-me) incision into the urinary bladder, usually done to divert the flow of urine when the bladder can no longer function as a reservoir. After incising the bladder the surgeon moves it forward and sutures the opening to the skin to form a stoma. Called also cystotomy.

vesicoumbilical ligament
median umbilical ligament.