Hair

Question 1

Answer 1

Question 2

What are the 3 zones of hair?

Answer 2

• Bulb
• Root
• Shaft

Question 3

• Terms
  • Root:
  • Shaft:
  • Vellus (baby hair):

Answer 3

• Root: Imbedded in the skin
• Shaft: Projects above skin’s surface
• Vellus (baby hair): Terminal hair

Question 4

What do hair follicles do?

Answer 4

• Produce hair

Question 5

What is the hair bulb?

Answer 5

It’s the expanded end of the hair follicle

Question 6

What is root plexus?

Answer 6

Knot of sensory nerves around the hair bulb

Question 7

What does the arrector pili muscle do?

Answer 7

Hair strands erect when arrector pili contracts

Question 8

What is hair consistent of?

Answer 8

Dead keratinized cells

Question 9

Where & what do Sebaceous glands do?

Answer 9

• Over entire body, except palms & soles
• Secrete Sebum - an oily substance
• Most are associated with a hair follicle

Question 10

What do Sebum do?

Answer 10

Collects dirt; softens and lubricates hair & skin

Question 11

What are the two types of sweat glands?

Answer 11

Eccrine gland & Apocrine gland

Question 12

What are 4 must know facts of sweat glands?

Answer 12

• Widely distributed on body
• Sweat- is a blood filtrate
• Sweat is 99% water with some salts
• Traces of metabolic wastes

Question 13

Function of Eccrine gland?

Answer 13

•Most numerous- produce true sweat (open directly to the surface of the skin)

Question 14

Aprocrine gland:
• Locations?
• Describe the sweat that it produces?

Answer 14

• Located in axillary, anal, & genital areas
• Produces sweat that contains oil or bacteria

Question 15

Answer 15

Question 16

Answer 16

Question 17

Answer 17

Question 18

Answer 18