ch 5 - integumentary system: accessory structures

Question 1

hair growth cycle

Answer 1

cycle of how hair grows and shed

Question 2

lanugo

Answer 2

hair in embryonic development

Question 3

vellus

Answer 3

peach fuzz hairs that cover most of body surfaces

Question 4

terminal hair

Answer 4

heavy pigmented hairs on head, eyebrows, and eyelashes

Question 5

during puberty vellus hair is replaced by

Answer 5

terminal hair in armpits, pubic regions and limbs

Question 6

2 exocrine glands of the skin

Answer 6

sebaceous (oil) and sweat glands

Question 7

sebaceous glands

Answer 7

holocrine glands that provide an oily lipid secretion (sebum) into hair follicles

Question 8

sweat (sudoriferous) glands

Answer 8

glands that produce a watery secretion called sweat

Question 9

2 types of sweat glands

Answer 9

eccrine and aprocrine

Question 10

apocrine sweat glands

Answer 10

secrete sweat into hair follicles via membrane secretion

Question 11

apocrine sweat glands location

Answer 11

armpit, groin, nipples

Question 12

eccrine sweat glands

Answer 12

coiled tubular glands that secrete sweat directly onto skin surface

Question 13

eccrine glands location

Answer 13

hands, soles of feat, forehead

Question 14

eccrine glands function

Answer 14

temperature regulation

Question 15

mammary glands

Answer 15

produce milk in female breasts

Question 16

ceruminous glands

Answer 16

produce cerumen (earwax) in the ear canal

Question 17

nails

Answer 17

dead keratinzed cells that protect tips of fingers and toes

Question 18

nail function

Answer 18

protects distal end of fingers, enhance touch, allows for grasping and scratching

Question 19

nail body

Answer 19

visible portion of the nail
- covers nail bed

Question 20

free edge

Answer 20

distal portion that extends past finger

Question 21

hyponychium

Answer 21

thickened strateum corneum beneath the free edge

Question 22

nail root

Answer 22

epidermal fold where nail production occurs

Question 23

eponychium (cuticle)

Answer 23

stratum corneum of nail root that extends over the exposed nail

Question 24

lunula

Answer 24

pale crescent near the root where blood vessels are obscured

Question 25

phases of injury repair

Answer 25

inflammatory
migration
proliferation
scarring

Question 26

inflammatory phase

Answer 26

bleeding, swelling and pain may occur
- mast cells trigger inflammation

Question 27

migration phase

Answer 27

scab stabilizes and protects the area
- cells from stratum basale migrate around scab to begin epidermis repair

Question 28

proliferation phase

Answer 28

scab start to disintegrate and fibroblasts provide collagen fiber meshwork

Question 29

scarring phase

Answer 29

formation of scar tissue completes the repair process

Question 30

keloid

Answer 30

thick raised area caused by excess scar tissue

Question 31

1st degree burn

Answer 31

partial thickness burns that damage only surface of the epidermis

Question 32

2nd degree burn

Answer 32

partial thickness burns that damage the entire epidermis and some of the dermis

Question 33

3rd degree burn

Answer 33

full thickness burns that destroy the epidermis, the dermis, and extend into the subcutaneous layer

Question 34

The area of rapidly reproducing cells of the nail is the

Answer 34

lunula