Anatomy of the Nail Flashcards
What is the Nail Plate
The visible part of the nail from lunula to free edge
where is the Lateral Nail Fold
To the side of the nail plate
What is the Lunula
Small white arc at the proximal part of the nail plate.
What is the role of the Nail
For protection, for evolutionary reasons such as scratching, picking etc
What is the Nail made up of
Keratin
What is the Perionychium
tissue at the end of the finger. increases sensory perception in the pad of the finger and for efficient and accurate picking up of small objects. It also serves as a guard to protect the very sensate fingertip, and functions as a temperature regulator.
The Root and the Sinus are collectively termed the Germinal Matrix, what is the significance of this structure ?
The growth of the nail starts here
The Matrix lies beneath the nail and contains nerves, lymph and blood vessels-what is the function of the Matrix?
To produce cells that become the nail plate . It determines the width and thickness of the nail plate.
The Nail Bed is beneath the nail plate, what is the name given to the skin layers of the Nail Bed ?
Epidermis and Dermis
How is strong cohesion of the nail bed achieved ?
The Longitudinal ridges fit closely into a similar pattern on the underside of the nail plate. It provides a very strong cohesion between the nail plate and nail bed
What is the Hyponychium?
the skin just under the free edge of your nail. It’s located just beyond the distal end of your nail bed, near your fingertip
What is the purpose of the Hyponychium?
It acts as a barrier from germs and debris, stops external substances from getting under your nail. Waterproof
The Proximal Nail Fold forms the Eponychium what is this commonly termed as ?
The cuticle
What is the function of the Eponychium?
It forms a seal that prevents allergens, irritants, and pathogens from entering the potential space between the distal skin of the digit and the nail plate
Where is the Hyponychium situated?
The skin just under the free edge of the nail
