Αποτελέσματα Αναζήτησης
Nail growth Definition of the nail matrix. In the first section we have attempted to define the matrix in anatomical terms, assisted by histology and immunohistochemistry illustrating regional differentiation within the nail unit and in particular with respect to keratin expression.
- Download PDF
The physical properties of the nail and the differ-ent types...
- Download PDF
nail diseases and to emphasize new observations at the microscope, from the standpoint of a practicing pathol-ogist. 4.1 nI troduction The human nail, the horny covering of the upper surface of the tip of each finger and toe, is a set of complex structures that can most accurately be called the nail unit.
29 Ιουλ 2024 · How do nails grow? At the proximal nail fold, the nail is tucked into a pouch in the skin. This area is referred to as the matrix. If you look at a nail, you will see a light half-moon-shaped area shimmering through the nail plate at the base of the nail. This is the visible part of the matrix.
28 Σεπ 2024 · A nail is a hard, keratinized structure found at the tips of the fingers and toes in humans and many other animals. Composed primarily of the protein keratin, nails grow from the nail matrix, which is located beneath the cuticle.
• Distal groove (limiting furrow): a cutaneous ridge demarcating the border between subungual structures and the finger pulp. Embryology Morphogenesis 8–12 weeks Individual digits are discernible from the 8th week of gestation [5] . The first embryonic element of the nail unit is the nail anlage, present from 9 weeks as the epidermis ...
The nail wall (vallum unguis) is the cutaneous fold overlapping the sides and proximal end of the nail. The lateral margin (margo lateralis) is lying beneath the nail wall on the sides of the nail and the nail groove or fold (sulcus matricis unguis) are the cutaneous slits into which the lateral margins are embedded.[3]
Introduction. Nail anatomy entails consideration of the nail plate and periungual tissues. An understanding of these structures should enable a clinician to interpret nail signs with greater clarity, better understand nail disease processes, and operate intelligently.
