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mondofacto - Online Medical Dictionary Category: Health and Medicine > Medical Dictionary Date & country: 26/01/2008, UK Words: 116197

versene
Trivial name for EDTA. ... (18 Nov 1997) ...

versicolor
Variegated; marked by a variety of colour. ... Origin: L. Particolored, fr. Verso, to turn, twist, + colour, colour ... (05 Mar 2000) ...

versiconal cyclase
<enzyme> From aspergillus parasiticus; catalyses the dehydration of versiconal to versicolorin b or c ... Registry number: EC 4.2.1.- ... (26 Jun 1999) ...

version
1. A change of form, direction, or the like; transformation; conversion; turning. 'The version of air into water.' (Bacon) ... 2. <medicine> A condition of the uterus in which its axis is deflected from its normal position without being bent upon itself. See Anteversion, and Retroversion. ... 3. The act of translating, or rendering, from one la …

version, foetal
The manual conversion of or changing of the polarity of the foetus with reference to the mother. ... (12 Dec 1998) ...

versive seizure
A partial seizure associated with head and eye deviation to one side. ... (05 Mar 2000) ...

versor
<geometry> The turning factor of a quaternion. ... The change of one vector into another is considered in quaternions as made up of two operations; 1st, the rotation of the first vector so that it shall be parallel to the second; 2d, the change of length so that the first vector shall be equal to the second. That which expresses in amount and …

vert
1. Everything that grows, and bears a green leaf, within the forest; as, to preserve vert and venison is the duty of the verderer. The right or privilege of cutting growing wood. ... 2. The colour green, represented in a drawing or engraving by parallel lines sloping downward toward the right. ... Origin: F, green, from L. Viridis. See Verdant, and c …

vertebra
<anatomy> One of 23 bones (excluding the sacrum) in the cervical, thoracic and lumbar regions that comprise the spine. There are 7 cervical vertebrae, 12 thoracic and 5 lumbar vertebrae. The bottom of the spine is fused and forms the sacrum. ... (27 Sep 1997) ...

vertebra dentata
Synonym for axis ... <botany> A stem, commonly used for the main stem of a whole plant or of an inflorescence. ... (09 Oct 1997) ...

vertebra magna
Synonym for sacrum ... <anatomy> The triangular-shaped bone lying between the 5th lumbar vertebra and the coccyx (tailbone). ... It consists of 5 vertebrae fused together and it articulates on each side with the bones of the pelvis (ilium), forming the sacroiliac joints. ... (17 Dec 1997) ...

vertebra plana
<radiology> Calve-Kummel-Verneuil disease, vertebral osteochondrosis, avascular necrosis of vertebral body, age: 2-15 years X-ray: uniform collapse of vertebral body into flat thin disc, increased density of verbra, neural arches not affected, disc spaces are normal with normal intervertebral disc space, intervertebral vacuum cleft sign (path …

vertebra prominens
The vertebra in the cervicothoracic region which has the most prominent spinous process (seventh cervical vertebra in 70% of the cases, sixth in 20%, and first thoracic vertebra in 10%). ... Synonym: nuchal tubercle. ... (05 Mar 2000) ...

vertebra prominens reflex
Pressure upon the last cervical vertebra of an animal, especially of one whose labyrinths have been destroyed and the vestibular nuclei isolated, causes relaxation or reduced tone of all four limbs. ... (05 Mar 2000) ...

vertebra vera
Synonym for true vertebra ... Any one of the cervical, thoracic, or lumbar vertebrae. ... Synonym: vertebra vera. ... (05 Mar 2000) ...

vertebrae
<anatomy> One of 23 bones (excluding the sacrum) in the cervical, thoracic and lumbar regions that comprise the spine. There are 7 cervical vertebrae, 12 thoracic and 5 lumbar vertebrae. The bottom of the spine is fused and forms the sacrum. ... (27 Sep 1997) ...

vertebrae coccygeae
Synonym for coccygeal vertebrae ... The four terminal segments of the vertebral column, usually fused to form the coccyx. ... Synonym: vertebrae coccygeae, tail vertebrae. ... (05 Mar 2000) ...

vertebrae sacrales
Synonym for sacral vertebrae ... The segments of the vertebral column, usually five in number, that fuse to form the sacrum. ... Synonym: vertebrae sacrales. ... (05 Mar 2000) ...

vertebrae spuriae
Synonym for false vertebrae ... <anatomy> The fused vertebral segments of the sacrum and coccyx. ... Synonym: vertebrae spuriae. ... (05 Mar 2000) ...

vertebrae thoracicae
Synonym for thoracic vertebrae ... The segments of the vertebral column, usually twelve, which articulate with ribs to form part of the thoracic cage. ... Synonym: vertebrae thoracicae. ... (05 Mar 2000) ...

vertebral
<anatomy> Of or pertaining to a vertebra. ... Origin: L. Vertebralis ... (18 Nov 1997) ...

vertebral arch
The posterior projection from the body of a vertebra that encloses the vertebral foramen; it consists of paired pedicles and laminae; the spinous, transverse, and articular processes arise from the arch. In aggregate, the venous arches-and the ligamenta flava that unite them-form the posterior wall of the vertebral (spinal) canal. ... Synonym: arcus …

vertebral artery
<anatomy, artery> Paired arteries which supply the muscles of the neck, spinal cord and cerebellum. ... (27 Sep 1997) ...

vertebral border of scapula
Synonym for medial border of scapula ... The edge of the scapula closest to the vertebral column, extending from superior angle to inferior angle. ... Synonym: margo medialis scapulae, vertebral border of scapula. ... (05 Mar 2000) ...

vertebral canal
The canal that contains the spinal cord, spinal meninges, and related structures. It is formed by the vertebral foramina of successive vertebrae of the articulated vertebral column. ... Synonym: canalis vertebralis, spinal canal, tubus vertebralis. ... (05 Mar 2000) ...

vertebral column
The series of vertebrae that extend from the cranium to the coccyx, providing support and forming a flexible bony case for the spinal cord. ... Synonym: columna vertebralis, backbone, dorsal spine, rachis, spina dorsalis, spina, spina, spinal column, spine, vertebrarium. ... (05 Mar 2000) ...

vertebral epidural space
Synonym for dura mater of spinal cord ... Single-layered strong membrane, comparable to and continuous with (at foramen magnum) the meningeal layer of the intracranial dura mater of the brain. It does not (in contrast to the dura mater of brain) adhere to the enveloping bony structures (vertebrae) or their periosteum, being separated from the latter …

vertebral foramen
The foramen formed by the union of the vertebral arch with the body; in the articulated vertebral column, the vertebral foramen collectively form the vertebral column. ... Synonym: foramen vertebrale. ... (05 Mar 2000) ...

vertebral formula
A formula indicating the number of vertebrae in each segment of the spinal column; for man it is C. 7, T. 12, L. 5, S. 5, Co. 4 = 33, the letters standing for cervical, thoracic, lumbar, sacral, and coccygeal. ... (05 Mar 2000) ...

vertebral fusion
Synonym for spinal fusion ... A procedure that involves fusing together two or more vertebrae in the spine using either bone grafts or metal rods (Harrington rods). This procedure may be used to correct kyphosis or scoliosis. It is also used in those who require spine stabilisation due to vertebral damage from ruptures discs, fractures, osteomyeliti …

vertebral ganglion
A small ganglion located along the sympathetic trunk or one of the nerve cords connecting the middle cervical ganglion and the cervicothoracic ganglion; it usually lies near the vertebral artery. ... Synonym: ganglion vertebrale. ... (05 Mar 2000) ...

vertebral groove
The depression bounded by the spinous processes and laminae of the vertebrae, in which lie the deep muscles of the back. ... (05 Mar 2000) ...

vertebral nerve
<anatomy, nerve> A branch from the stellate ganglion that ascends along the vertebral artery to the level of the axis or atlas, giving branches to the cervical nerves and meninges. ... Synonym: nervus vertebralis. ... (05 Mar 2000) ...

vertebral notch
One of the two concavities above (superior) and below (inferior) the pedicle of a vertebra; the notches of two adjacent vertebrae (plus the intervertebral disc) form an intervertebral foramen. ... Synonym: incisura vertebralis, intervertebral notch. ... (05 Mar 2000) ...

vertebral part of diaphragm
Synonym for lumbar part of diaphragm ... The portion of the diaphragm that arises from the upper lumbar vertebrae and from the medial and lateral arcuate ligaments. ... See: right crus of diaphragm, left crus of diaphragm, lateral arcuate ligament, medial arcuate ligament. ... Synonym: pars lumbalis diaphragmatis, vertebral part of diaphragm. ... (05 M …

vertebral plexus
Synonym for periarterial plexus of vertebral artery ... <anatomy, artery> A plexus of autonomic nerves on the vertebral artery derives from the subclavian plexus. ... Synonym: plexus vertebralis, vertebral plexus. ... (05 Mar 2000) ...

vertebral polyarthritis
Inflammation of a number of the intervertebral disks without involvement of the vertebral bodies. ... (05 Mar 2000) ...

vertebral pulp
Synonym for nucleus pulposus ... The soft fibrocartilage central portion of the intervertebral disk; regarded as a derivative of the notochord. ... Synonym: gelatinous nucleus, nucleus gelatinosus, vertebral pulp. ... (05 Mar 2000) ...

vertebral region
The central region of the back, corresponding to the underlying vertebral column. ... Synonym: regio vertebralis. ... (05 Mar 2000) ...

vertebral ribs
Synonym for floating ribs ... The two lower ribs on either side that are not attached anteriorly. ... Synonym: costae fluitantes, costae fluctuantes, vertebral ribs. ... (05 Mar 2000) ...

vertebral vein
<anatomy, vein> A vein derived from tributaries (venae comitantes) which run through the foramina in the transverse processes of the first six cervical vertebrae and form a plexus around the vertebral artery; it empties as a single trunk into the brachiocephalic veins. ... Synonym: vena vertebralis. ... (05 Mar 2000) ...

vertebral venography
Radiographic demonstration of the epidural venous plexus by injection of contrast medium into the spinous process. ... (05 Mar 2000) ...

vertebral venous plexus
Synonym for vertebral venous system ... Any of four interconnected venous networks surrounding the vertebral column; anterior external vertebral venous plexus, the small system around the vertebral bodies; posterior external vertebral venous plexus, the extensive system around the vertebral processes; anterior internal vertebral venous plexus, the s …

vertebral venous system
Any of four interconnected venous networks surrounding the vertebral column; anterior external vertebral venous plexus, the small system around the vertebral bodies; posterior external vertebral venous plexus, the extensive system around the vertebral processes; anterior internal vertebral venous plexus, the system running the length of the vertebr …

vertebral-basilar artery disease
<cardiology> Aortic arch syndrome, also referred to by many as vertebral-basilar artery disease, carotid artery occlusive syndrome and subclavian steal syndrome is characterised by a constellation of signs and symptoms which occur secondary to abnormalities in the major arteries which extend off of the aortic arch. ... These abnormalities are …

vertebral-basilar system
The arterial complex comprising the two vertebral arteries joining to form the basilar artery, and their immediate branches. ... (05 Mar 2000) ...

vertebrarium
Synonym: vertebral column. ... Origin: Mod. L. ... (05 Mar 2000) ...

vertebrata
<zoology> One of the grand divisions of the animal kingdom, comprising all animals that have a backbone composed of bony or cartilaginous vertebrae, together with Amphioxus in which the backbone is represented by a simple undivided notochord. The Vertebrata always have a dorsal, or neural, cavity above the notochord or backbone, and a ventral …

vertebrate hormones
Hormones synthesised in vertebrates. ... (05 Mar 2000) ...

vertebrate viruses
Viruses infecting man and other vertebrates. ... (12 Dec 1998) ...

vertebrated
1. <anatomy> Having a backbone, or vertebral column, containing the spinal marrow, as man, quadrupeds, birds, amphibia, and fishes. ... 2. <botany> Contracted at intervals, so as to resemble the spine in animals. ... 3. <zoology> Having movable joints resembling vertebrae; said of the arms ophiurans. ... 4. <zoology> Of or pert …

vertebrated catheter
A catheter made of several segments moving on each other like the links of a chain. ... (05 Mar 2000) ...

vertebrated probe
A probe made up of a series of short sections hinged together for flexibility in penetrating convoluted tracts. ... (05 Mar 2000) ...

vertebrates
Animals having a vertebral column, members of the phylum chordata, subphylum vertebrata comprising mammals, birds, reptiles, amphibians, and fishes. ... (12 Dec 1998) ...

vertebrectomy
<procedure> Resection of a vertebral body. ... Origin: vertebra + G. Ektome, excision ... (05 Mar 2000) ...

vertebro-
<anatomy, prefix> A combining form used in anatomy to indicate connection with, or relation to, a vertebra, vertebrae, or vertebral column; as in vertebrocostal. ... (29 Oct 1998) ...

vertebroarterial
Relating to a vertebra and an artery, or to the vertebral artery. ... (05 Mar 2000) ...

vertebroarterial foramen
Synonym for transverse foramen ... Foramen processus transversus. ... Synonym: foramen processus transversi, foramen transversarium, foramen vertebroarterialis, foramen of transverse process, vertebroarterial foramen. ... (05 Mar 2000) ...

vertebrobasilar insufficiency
Obstruction or stenosis of the vertebral-basilar system manifested by disturbances of consciousness, vertigo, headache, hemi- or quadriplegia, dysarthria, and facial paralysis. ... (12 Dec 1998) ...

vertebrochondral
Denoting the three false ribs (eighth, ninth, and tenth), which are connected with the vertebrae at one extremity and the costal cartilages at the other, these cartilages not articulating directly with the sternum. ... Synonym: vertebrocostal. ... Origin: vertebro-+ G. Chondros, cartilage ... (05 Mar 2000) ...

vertebrochondral ribs
Synonym for false rib ... <anatomy> Five lower ribs on either side that do not articulate with the sternum directly. ... Synonym: costae spuriae, vertebrochondral ribs. ... (05 Mar 2000) ...

vertebrocostal
Synonym: costovertebral. ... Synonym: vertebrochondral. ... Origin: vertebro-+ L. Costa, rib ... (05 Mar 2000) ...

vertebrocostal trigone
A triangular area in the diaphragm near the lateral arcuate ligament that is devoid of muscle fibres; it is covered by pleura superiorly and by peritoneum inferiorly. ... Synonym: Bochdalek's gap, trigonum lumbocostale. ... (05 Mar 2000) ...

vertebrofemoral
Relating to the vertebrae and the femur. ... (05 Mar 2000) ...

vertebroiliac
<anatomy> Relating to the vertebrae and the ilium. ... (21 Jun 2000) ...

vertebropelvic ligaments
More specifically see iliolumbar ligament, sacrospinous ligament, sacrotuberous ligament. ... (05 Mar 2000) ...

vertebrosacral
<anatomy> Relating to the vertebrae and the sacrum. ... (05 Mar 2000) ...

vertebrosternal
Synonym for sternovertebral ... Relating to the sternum and the vertebrae; denoting the true ribs, or the seven upper ribs on either side, which articulate with the vertebrae and with the sternum. ... Synonym: vertebrosternal. ... (05 Mar 2000) ...

vertebrosternal ribs
Synonym for true ribs ... Seven upper ribs on either side whose cartilages articulate directly with the sternum. ... Synonym: costae verae, vertebrosternal ribs. ... (05 Mar 2000) ...

vertex
1. <anatomy> A turning point; the principal or highest point; top; summit; crown; apex. Specifically: the top, or crown, of the head. ... 2. <astronomy> The zenith, or the point of the heavens directly overhead. ... 3. <mathematics> The point in any figure opposite to, and farthest from, the base; the terminating point of some parti …

vertex cordis
Synonym for apex of heart ... The blunt extremity of the heart formed by the left ventricle. ... See: apex beat. ... Synonym: apex cordis, vertex cordis. ... (05 Mar 2000) ...

vertex corneae
Synonym for vertex of cornea ... The central part of the cornea, slightly thinner than the peripheral part. ... Synonym: vertex corneae. ... (05 Mar 2000) ...

vertex of cornea
The central part of the cornea, slightly thinner than the peripheral part. ... Synonym: vertex corneae. ... (05 Mar 2000) ...

vertex presentation
See: cephalic presentation. ... (05 Mar 2000) ...

vertical
1. Of or pertaining to the vertex; situated at the vertex, or highest point; directly overhead, or in the zenith; perpendicularly above one. 'Charity . . . Is the vertical top of all religion.' (Jer. Taylor) ... 2. Perpendicular to the plane of the horizon; upright; plumb; as, a vertical line. ... <astronomy> Vertical angle, an angle measured o …

vertical axis
In dentistry, the line around which the working side condyle rotates in the horizontal plane during mandibular movement. ... (05 Mar 2000) ...

vertical classification
<zoology> Classification which stresses common descent and tends to unite ancestral and descendant groups of a phyletic line in a single higher taxon, separating them from contemporaneous taxa having reached a similar grade of evolutionary change. Compare: Horizontal classification. ... (09 Jan 1998) ...

vertical dimension
The length of the face determined by the distance of separation of jaws. Occlusal vertical dimension (ovd or vdo) or contact vertical dimension is the lower face height with the teeth in centric occlusion. Rest vertical dimension (vdr) is the lower face height measured from a chin point to a point just below the nose, with the mandible in rest posi …

vertical displacement event
Disruption which occurs because plasma is not adequately stabilised against vertical motions. ... (09 Oct 1997) ...

vertical elastic
Elastic material used in a direction perpendicular to the occlusal plane, connecting one arch wire to the other, and usually used to improve intercuspation. ... (05 Mar 2000) ...

vertical growth phase
Spread of melanoma cells from the epidermis into the dermis and later the subcutis, from which site metastasis may take place. ... (05 Mar 2000) ...

vertical heart
Loosely descriptive of the heart's electrical axis when this is directed at approximately +90°. As a cardiac position, recognised in the electrocardiogram when the QRS complex in lead aVL resembles V1 while that in aVF resembles V6. ... (05 Mar 2000) ...

vertical hymen
A hymen in which the opening is perpendicular. ... (05 Mar 2000) ...

vertical illumination
<microscopy> Bright field illumination by light from the objective which is reflected or scattered from the (usually opaque) object. Illumination is by means of a vertical illuminator placed above the objective. Light is brought into a side tube and directed toward the back aperture of the objective by a tiny mirror or prism, or else by a ful …

vertical index
The relation of the height to the length of the skull: (height &times; 100)/length. ... Synonym: height-length index, length-height index, transversovertical index. ... (05 Mar 2000) ...

vertical instability
<radiobiology> A type of magnetohydrodynamic (n=0) instability where the plasma drifts vertically upward. Nearly all tokamaks are vertically unstable (all highly shaped ones are). Controlling this instability is possible in many cases, and is an important facet of machine design. Vertical instabilities give rise to halo effects. ... (09 Oct 19 …

vertical muscle of tongue
An intrinsic muscle of the tongue, consisting of fibres that pass from the aponeurosis of the dorsum to the aponeurosis of the inferior surface; action, decreases the superior to inferior dimension of (flattens) the tongue; nerve supply, hypoglossal for motor, lingual for sensory. ... Synonym: musculus verticalis linguae. ... (05 Mar 2000) ...

vertical nystagmus
An up-and-down oscillation of the eyes. ... (05 Mar 2000) ...

vertical opening
Synonym for vertical dimension ... The length of the face determined by the distance of separation of jaws. Occlusal vertical dimension (ovd or vdo) or contact vertical dimension is the lower face height with the teeth in centric occlusion. Rest vertical dimension (vdr) is the lower face height measured from a chin point to a point just below the no …

vertical osteotomy
<procedure> An oral surgical procedure similar to sliding oblique osteotomy. ... (05 Mar 2000) ...

vertical overlap
The extension of the upper teeth over the lower teeth in a vertical direction when the opposing posterior teeth are in contact in centric occlusion, the distance that teeth lap over their antagonists vertically, especially for the distance that the upper incisal edges drop below the lower ones, but may also describe the vertical relations of opposi …

vertical parallax
The relative vertical displacement of the image when each eye is closed in turn; seen in vertical diplopia, or heterophoria. ... (05 Mar 2000) ...

vertical plate
Synonym for perpendicular plate ... Flat portion of a bone which lies within or closely approximates a vertical plane. ... See: perpendicular plate of ethmoid bone, perpendicular plate of palatine bone. ... Synonym: lamina perpendicularis, pars perpendicularis, vertical plate. ... (05 Mar 2000) ...

vertical retraction syndrome
Synonym for retraction syndrome ... <syndrome> A retraction of the globe and pseudoptosis on attempted adduction; due to co-innervation of the horizontal recti. Sometimes there is an inability to abduct the affected eye (type 1), or adduct the affected eye (type 2), or both (type 3). ... Synonym: Duane's syndrome. ... (05 Mar 2000) ...

vertical strabismus
A form of strabismus in which the visual axis of one eye deviates upward (s. Sursum vergens) or downward (s. Deorsum vergens). ... (05 Mar 2000) ...

vertical transmission
<microbiology> Transmission of a pathogen such as HIV from mother to foetus or baby during pregnancy or birth. ... See: perinatal transmission. ... (09 Oct 1997) ...

vertical vertigo
Dizziness experienced when standing upright. ... (05 Mar 2000) ...

verticalis
Synonym: vertical. ... Origin: L. ... (05 Mar 2000) ...

vertices
Plural of vertex. ... (05 Mar 2000) ...

verticillate
<botany> Arranged in one or more whorls. ... (09 Oct 1997) ...