hair strands and their folicles

Question 1

shaft

Answer 1

part of the hair visible above the skin

Question 2

root

Answer 2

part burried within the skin

Question 3

hair follicle

Answer 3

invagination of the epidermis that extends from skin surface to dermis

Question 4

primary hair follicle

Answer 4

have a large diameter, are rooted more deeply in the dermis or subcutis and are associated with sebaceous and epitrichial sweat glads and an arrector pilli muscle

Question 5

secondary hair follicle

Answer 5

are smaller in diameter, are more superficially rooted, and may be accompanied by a sebaceous gland but lack a sweat gland and arrector pilli muscle

Question 6

simple hair follicle

Answer 6

where a single hair emerges from a singular orifice

Question 7

compound hair follicle

Answer 7

where a multiple hair emerges from a singular orifce

Question 8

hair bulb

Answer 8

formed by the expansion of the deepest part of the hair follicle

Question 9

papilla

Answer 9

a mound of dermal cells, covered with matrix

Question 10

matrix

Answer 10

rapidly dividing epithelial cells

Question 11

3 phases of the hair cycle

Answer 11

-anagen phase
- telogen phase
- catagen phase

Question 12

hoof functions

Answer 12

• maintain good traction during locomotion and climbing
• defense against predators