Free 5-question sample test with instant feedback. See how ready you are.
Question 1
What is the name of the tough, protective protein that makes up the natural nail plate?
Answer: Keratin. The nail plate is composed of hardened, compacted keratin cells.
Question 2
What is the name of the living skin at the base of the nail plate that produces new nail cells?
Answer: The matrix. It is the only living part of the nail unit responsible for nail growth.
Question 3
What is the whitish, half-moon shaped area visible at the base of the nail plate called?
Answer: The lunula. It is the visible portion of the nail matrix and appears lighter because it reflects light differently.
Question 4
What is the term for the slightly thickened skin layer that lies beneath the free edge of the nail plate?
Answer: Hyponychium. It seals the nail plate to the nail bed and protects against bacterial invasion.
Question 5
What is the cuticle, and which structure is it technically a part of?
Answer: The cuticle is dead tissue attached to the nail plate surface; it is the extension of the eponychium.