Question 1

What is the scientific study of hair, its diseases, and care called?

Accepted Answer

Trichology. It is the branch of dermatology that deals specifically with the hair and scalp.

Question 2

What are the three main layers of the hair shaft from outermost to innermost?

Accepted Answer

Cuticle, cortex, and medulla. The cuticle is the outermost protective layer, the cortex provides strength and color, and the medulla is the innermost core.

Question 3

Which layer of the hair shaft contains the melanin pigment that gives hair its color?

Accepted Answer

The cortex. Melanin granules are distributed throughout the cortex and determine the hair's natural color.

Question 4

What is the term for the tube-like depression in the skin that encloses the hair root?

Accepted Answer

The hair follicle. It is the pocket in the skin from which the hair grows and receives nutrients.

Question 5

What structure at the base of the hair follicle supplies nutrients and produces new hair cells?

Accepted Answer

The dermal papilla. It contains blood vessels and nerves that nourish the hair follicle and stimulate hair growth.

Trichology & Scalp – Texas Cosmetology State Board Exam

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