Free Nail Technician Nail Anatomy and Physiology Questions and Answers

Question 1

A client mentions that the half-moon shape at the base of their thumbnail is very prominent. The nail technician correctly identifies this structure as the:

Accepted Answer

Lunula

Answer

The lunula is the visible part of the nail matrix, which appears as a whitish, half-moon shape at the base of the nail plate. It is most visible on the thumb.

Question 2

Which part of the nail unit is responsible for producing the cells that form the nail plate?

Accepted Answer

Matrix

Answer

The matrix is the 'root' of the nail, where keratin cells are produced. These cells are pushed forward, flatten, and harden to become the nail plate. Damage to the matrix can result in permanent changes to nail growth.

Question 3

A nail technician is carefully cleaning under the free edge of a client's nail. What is the name of the tissue that forms a protective seal between the fingertip and the nail plate?

Accepted Answer

Hyponychium

Answer

The hyponychium is the thickened layer of skin located beneath the free edge of the nail. It creates a waterproof barrier, preventing pathogens from getting under the nail plate and into the nail bed.

Question 4

During a service, a client asks why it's important not to cut the living skin at the base of the nail. The technician explains that this tissue, the eponychium, serves a vital function. What is that function?

Accepted Answer

To protect the matrix from infection

Answer

The eponychium is the living tissue at the base of the nail plate that creates a protective seal. Its primary function is to prevent bacteria and other pathogens from entering the area where new nail cells are created, which is the matrix.

Question 5

The nail plate itself is composed of several layers of flattened, non-living cells made of:

Accepted Answer

Keratin

Answer

The nail plate is primarily made of alpha-keratin, a tough, fibrous structural protein. These keratin cells are produced in the matrix and are dead by the time they form the visible nail plate.

Nail Technician Practice Test

Nail Technician Practice Test

Free Nail Technician Nail Anatomy and Physiology Questions and Answers