Structure of Hair

Question 1

Describe the bulb

Answer 1

deepest part of hair at base of follicle.

Question 2

Describe the root

Answer 2

attaches hair to follicle, extents to shaft

Question 3

Describe the shaft

Answer 3

protrudes above surface

Question 4

Describe hair follicle

Answer 4

contains epithelial cells that produce hair

Question 5

Describe hair papilla

Answer 5

lump of connective tissue that surrounds blood vessels and nerves at base of follicle.

Question 6

Describe hair matrix

Answer 6

Dividing cells push towards surface to produce hair

Question 7

Describe the medulla

Answer 7

medial core of shaft, air spaces

Question 8

Describe the cortex

Answer 8

2nd most inner layer, responsible for strength elasticity, curliness *melanin gives hair colour.

Question 9

Describe the cuticle

Answer 9

3rd most inner, translucent

Question 10

Describe the inner root shealth

Answer 10

4th most inner

Question 11

Describe the outer root stealth

Answer 11

outer layer of hair

Question 12

What layer of hair do hair gels affect?

Answer 12

3 outer layers

Question 13

Permanent dyes penetrate what layer

Answer 13

cortex

Question 14

Surface charge

Answer 14

negative