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Above: Illustrated diagram of the anatomy of a fingernail. Above: Microscopic images of a fingernail cross section. The top image is magnified by 4x and the bottom image is the same tissue sample as the top image centered on the nail root and nail matrix magnified by 20x.
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.
The matrix produces cells that become the nail plate. The width and thickness of the nail plate is determined by the size, length, and thickness of the matrix, while the shape of the fingertip bone determines if the nail plate is flat, arched, or hooked.
29 Ιουλ 2024 · The nail is framed by the lateral nail folds on the left and right side of it. The skin bordering the lower end of the nail is called the proximal nail fold. A thin layer of skin, known as the cuticle, grows over the nail there.
29 Νοε 2021 · The nail unit is a complex structure located on the dorsal surface of the fingers and toes. It has two main functions: Protection – protects the digits from trauma. Sensation – assists with tactile sensation. In this article, we shall look at the anatomy of the nail unit – its component parts and clinical correlations. Fig 1.
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. The visible nail plate is the ultimate product of the continuous pathway of maturation that...
Aesthetics aside, a healthy (finger)nail has the function of protecting the distal phalanx, the fingertip, and the surrounding soft tissues from injuries. It also serves to enhance precise delicate movements of the distal digits
