hair

Question 1

hair shaft

Answer 1

superficial projects above skin surface

Question 2

hair root

Answer 2

portion of hair deep to the shaft that penetrates into dermis. its what contains inner layers mcc

Question 3

medulla

Answer 3

the innermost/ thinnest layer of the hair root

Question 4

cortex

Answer 4

the outer layer of medulla. second innermost

Question 5

cuticle

Answer 5

very thin 3rd innermost

Question 6

hair follicle

Answer 6

composed of external and internal root sheath. surround hair root. between hair bulb and hair root

Question 7

internal root sheath

Answer 7

third outer layer

Question 8

external root sheath

Answer 8

continuation of epidermis. layer before the dermal root sheath/ last layer

Question 9

glassy membrane

Answer 9

clear connective tissue separating outer root sheath from connective tissue

Question 10

bulb of hair

Answer 10

base of hair follicle, round onion shaped

Question 11

papillla of the hair

Answer 11

contains areolar ct, nipple shaped and base of hair bulb

Question 12

matrix of hair

Answer 12

stratum basale covering of papilla of the hair

Question 13

arrector pili muscle

Answer 13

extends from dermis to to dermal root sheath around side of hair follicle looks like long muscle coming out of side of hair follicle

Question 14

meissners corpuscle (corpuscle of touch)

Answer 14

at top in papillary region bellow epidermis, small

Question 15

lamellted (pacinian) corpuscle

Answer 15

in hypodermis, respond to vibrations/ sensitive to touch

Question 16

hair root plexus

Answer 16

dendrites of neurons that wrap around hair follicle, sensitive to touch and generate nerve impulses if hair shaft is touched

Question 17

free nerve endings

Answer 17

dendrites in dermal papillae (in papillary region below epidermis/ stratum granuloso)

Question 18

sebaceous oil gland

Answer 18

connected to hair follicle secret sebum (oily substance)

Question 19

sudoriferous sweat gland

Answer 19

release sweat into hair follicle or onto skin through pores divided to eccrine or apocrine

Question 20

eccrine sweat gland

Answer 20

coiled tubular glands in forehead, palms, soles. pore projects onto surface of epidermis

Question 21

apocrine sweat gland

Answer 21

coiled tubular glands with larger ducts found in axilla, groin, breast. located in more lower dermis.

Question 22

ceruminous gland

Answer 22

produce waxy secretion in external ear