EC EC Hair Growth and Follicle Anatomy 2

Question 1

What type of hair is fine, soft, unpigmented, and covers most of the body?

Accepted Answer

Vellus hair

Answer

Vellus hair is the fine, short, lightly pigmented hair that covers most of the body surface.

Question 2

The arrector pili muscle is responsible for which phenomenon?

Accepted Answer

'Goosebumps' when hair stands erect

Answer

The arrector pili muscle contracts in response to cold or fear, causing the hair to stand upright and producing goosebumps.

Question 3

What gives hair its color?

Accepted Answer

Melanin produced by melanocytes in the hair bulb

Answer

Melanocytes located in the hair bulb matrix produce melanin pigment, which determines hair color.

Question 4

Which type of hair growth pattern describes hair growing from a single follicle opening?

Accepted Answer

Solitary follicle

Answer

A solitary follicle produces one hair per opening, which is the most common pattern on most body areas.

Question 5

Hypertrichosis refers to which hair condition that an electrologist may be asked to treat?

Accepted Answer

Excessive hair growth beyond what is normal for age, sex, or ethnicity

Answer

Hypertrichosis is a condition characterized by abnormal, excessive hair growth anywhere on the body.

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