Question 1

What is the name of the living skin at the base of the nail plate that partially overlaps the lunula?

Accepted Answer

The eponychium (commonly called the cuticle). It is the living tissue that should never be cut, as it acts as a protective seal.

Question 2

What is the technical term for the white, half-moon shaped area visible at the base of the nail plate?

Accepted Answer

The lunula. It is the visible portion of the nail matrix and appears white because the matrix tissue is thicker there, obscuring the underlying blood vessels.

Question 3

Which part of the nail is responsible for nail growth?

Accepted Answer

The nail matrix. It contains nerves, lymph vessels, and blood vessels that produce the cells that form the nail plate.

Question 4

What is the hyponychium?

Accepted Answer

The hyponychium is the slightly thickened skin beneath the free edge of the nail plate. It acts as a seal to protect the nail bed from microorganisms.

Question 5

What is the average rate of fingernail growth per month in a healthy adult?

Accepted Answer

Fingernails grow approximately 1/8 inch (3 mm) per month. Toenails grow more slowly, at roughly half that rate.

Nail Technology – Florida Cosmetology State Board Exam

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