| vallecula unguis | The cutaneous furrow in which the lateral border of the nail is situated. Synonym: groove of nail matrix, vallecula unguis. (05 Mar 2000) |
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| vallecula | Origin: NL, dim. Fr. L. Vallis, valles, a valley. 1. <anatomy> A groove; a fossa; as, the vallecula, or fossa, which separates the hemispheres of the cerebellum. 2. <botany> One of the grooves, or hollows, between the ribs of the fruit of umbelliferous plants. Source: Websters Dictionary (01 Mar 1998) |
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| vallecula cerebelli | A deep hollow on the inferior surface of the cerebellum, between the hemispheres, containing the medulla oblongata and the falx cerebelli. Synonym: vallis. (05 Mar 2000) |
| vallecula epiglottica | A depression immediately posterior to the root of the tongue between the median and lateral glossoepiglottic folds on either side. Synonym: vallecula epiglottica. (05 Mar 2000) |
| vallecula sylvii | The deep depression of the basal surface of the forebrain that corresponds in position to the anterior perforated substance. Bounded medially by the optic tract and rostrally by the orbital surface of the frontal lobe, it extends laterally around the overhanging pole of the temporal lobe into the Sylvian fissure (sulcus lateralis). Synonym: fossa lateralis cerebri, fossa of Sylvius, lateral fossa of brain, vallecula sylvii. (05 Mar 2000) |
| epiglottic vallecula | A depression immediately posterior to the root of the tongue between the median and lateral glossoepiglottic folds on either side. Synonym: vallecula epiglottica. (05 Mar 2000) |
| vallum unguis | The fold of skin overlapping the lateral and proximal margins of the nail. Synonym: vallum unguis, wall of nail. (05 Mar 2000) |
| radix unguis | The proximal end of the nail, concealed under a fold of skin. Synonym: radix unguis. (05 Mar 2000) |
| margo lateralis unguis | The sides of the nail extending from the proximal to the free borders. Synonym: margo lateralis unguis. (05 Mar 2000) |
| margo liber unguis | The distal border of the nail that overhangs the tip of the digit. Synonym: margo liber unguis. (05 Mar 2000) |
| margo occultus unguis | The proximal border of the nail entirely covered by the nail wall. Synonym: margo occultus unguis, occult border of nail. (05 Mar 2000) |
| matrix unguis | The area of the corium on which the nail rests; it is extremely sensitive and presents numerous longitudinal ridges on its surface. According to some anatomists, the nail bed is the portion covered by the body of the nail, the nail matrix being only the part on which the root of the nail rests. Synonym: matrix unguis, keratogenous membrane, nail matrix, onychostroma. (05 Mar 2000) |
| retinacula unguis | Fibrous attachments of the nail-bed to the underlying phalanx. Synonym: retinacula unguis. (05 Mar 2000) |
| corpus unguis | The exposed portion of the nail distal to its root. Synonym: corpus unguis. (05 Mar 2000) |
| cristae matricis unguis | The numerous longitudinal ridges of the nail bed distal to the lunula. Synonym: cristae matricis unguis. (05 Mar 2000) |
| Haller's unguis | The lower of two elevations on the medial wall of the posterior horn of the lateral ventricle of the brain, caused by the depth of the calcarine sulcus. Synonym: Haller's unguis, hippocampus minor, minor hippocampus, Morand's spur, unguis avis. (05 Mar 2000) |
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