What is a nail bed?
Definition of nail bed : the vascular epidermis upon which most of the fingernail or toenail rests that has a longitudinally ridged surface often visible through the nail.
What is a nail anatomy and physiology?
The nail is a specialized structure of the epidermis that occurs at the tips of our fingers and toes. The nail bed is rich in blood vessels, making it appear pink, except at the base, where there is a crescent-shaped region called the lunula. The nail body is composed of keratin-rich, densely packed dead keratinocytes.
Why is the nail bed important?
A smooth nail bed is essential for regrowth of the normal-appearing nail. Inadequate or unrepaired nail-bed lacerations may form granulation tissue or scars, which result in an area of nonadherence or other nail-plate deformities.
What is the physiology of nails?
Fingernails and toenails are clear, hard derivatives of the stratum corneum. They are composed of very thin, dead, scalelike cells, densely packed together and filled with parallel fibers of hard keratin. New cells are added to the nail plate by mitosis in the nail matrix at its proximal end.
What is the main function of the nail?
Nails protect the sensitive tips of fingers and toes. We don’t need our nails to survive, but they do support the tips of our fingers and toes, protect them from injury, and help us pick up small objects.
What is the anatomy of the nail?
A fingernail consists of several parts including the nail plate (the visible part of the nail), the nail bed (the skin beneath the nail plate), the cuticle (the tissue that overlaps the plate and rims the base of the nail), the nail folds (the skin folds that frame and support the nail on three sides), the lunula (the …
What are nails?
A nail is a claw-like plate at the tip of the fingers and toes in most primates. Nails correspond to claws found in other animals. Fingernails and toenails are made of a tough protective protein called alpha-keratin, which is a polymer. Alpha-keratin is found in the hooves, claws and horns of vertebrates.
What are the 3 main parts of nail?
-The nail plate: The visible hard part of the nail. – Nail folds: The skin that frames each of your nail plates on three sides. -The nail bed: The skin beneath the nail plate. The cells at the base of your nail bed are the ones that actually produce the fingernail or toenail plate.
What is nail bed made of?
The nail bed is the skin beneath the nail plate. Like all skin, it is made of two types of tissues: the deeper dermis, the living tissue which includes capillaries and glands, and the epidermis, the layer just beneath the nail plate, which moves toward the finger tip with the plate.