EC EC Hair Growth and Follicle Anatomy

Question 1

Which phase of the hair growth cycle is the active growth phase during which electrolysis is most effective?

Accepted Answer

Anagen

Answer

Telogen

Answer

Catagen

Answer

Exogen

Question 2

What is the name of the innermost layer of the hair shaft?

Accepted Answer

Medulla

Answer

Cortex

Answer

Cuticle

Answer

Matrix

Question 3

Which structure at the base of the hair follicle contains the actively dividing cells responsible for hair growth?

Accepted Answer

Hair bulb matrix

Answer

Sebaceous gland

Answer

Dermal papilla

Answer

Arrector pili muscle

Question 4

During which hair growth phase does the follicle shrink and detach from the dermal papilla?

Accepted Answer

Catagen

Answer

Anagen

Answer

Telogen

Answer

Kenogen

Question 5

What percentage of scalp hairs are typically in the telogen (resting) phase at any given time?

Accepted Answer

15–20%

Answer

5–10%

Answer

30–40%

Answer

50–60%

Question 6

Which skin layer houses the hair follicle bulb and dermal papilla?

Accepted Answer

Dermis

Answer

Epidermis

Answer

Hypodermis

Answer

Stratum corneum