| os unguis | An irregularly rectangular thin plate, forming part of the medial wall of the orbit behind the frontal process of the maxilla; it articulates with the inferior nasal concha, ethmoid, frontal, and maxillary bones. Synonym: os lacrimale, os unguis. (05 Mar 2000) |
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| 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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| 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) |
| pterygium unguis | Origin: NL, fr. Gr, properly a dim, akin to a feather. <medicine> A superficial growth of vascular tissue radiating in a fanlike manner from the cornea over the surface of the eye. Source: Websters Dictionary (01 Mar 1998) |
| stratum corneum unguis | The outer, horny layer of the nail. Synonym: cornified layer of nail, horny layer of nail. (05 Mar 2000) |
| stratum germinativum unguis | The deeper layer of the nail that is continuous with the stratum germinativum of the surrounding skin and from which the nail plate is continuously formed. Synonym: germinative layer of nail. (05 Mar 2000) |
| sulcus matricis 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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