CHS CHS Trichology & Hair Science

Question 1

The hair growth cycle consists of three main phases. Which phase is the active growth phase?

Accepted Answer

Anagen

Answer

Catagen

Answer

Telogen

Answer

Exogen

Question 2

What is the medulla in the context of hair structure?

Accepted Answer

The innermost core of the hair shaft

Answer

The outermost layer of the hair shaft

Answer

The middle cortex layer that provides strength

Answer

The layer of cells that produces new hair

Question 3

Eumelanin and pheomelanin are pigments found in the hair cortex responsible for:

Accepted Answer

Hair color

Answer

Hair texture and curl pattern

Answer

Moisture retention

Answer

Tensile strength

Question 4

Alopecia areata is best described as:

Accepted Answer

Patchy hair loss caused by an autoimmune response

Answer

Gradual thinning due to aging

Answer

Permanent scarring of hair follicles from chemicals

Answer

Hair breakage from excessive tension

Question 5

Which layer of the hair shaft is primarily responsible for its strength and elasticity?

Accepted Answer

Cortex

Answer

Cuticle

Answer

Medulla

Answer

Sebaceous layer

Question 6

The sebaceous gland attached to each hair follicle produces:

Accepted Answer

Sebum (natural oil)

Answer

Keratin proteins

Answer

Melanin pigment

Answer

Sweat for cooling