integumentary system

Question 1

what is the integumentary system

Answer 1

hair, skin, nails, glands

Question 2

function of integumentary system

Answer 2

Protective covering
Regulates body temperature
Prevents water loss
Houses sensory receptors
Forms necessary biochemicals
Excretes some waste

Question 3

2 layers of skin

Answer 3

outer layer (epidermis)
inner layer (dermis)

Question 4

nails

Answer 4

Protective coverings on fingers and toes.
Nail plate: keratinized cells over the nail bed
Nail bed: specialized epithelial cells
Lunula: whitish half moon that covers the most actively growing region

Question 5

2 types of sweat glands

Answer 5

eccrine and apocrine

Question 6

acne

Answer 6

disease of the sebaceous glands that produce blackheads and pimples

Question 7

alopecia

Answer 7

hair loss, usually sudden

Question 8

athletes foot

Answer 8

fungal infection usually in the skin of the toes or soles (can be anywhere on your body)

Question 9

birthmark

Answer 9

congenital blemish on the skin usually visible right after birth

Question 10

boil

Answer 10

bacterial infection of the skin caused by bacteria in the hair follicle

Question 11

cyst

Answer 11

liquid-filled sac or capsule

Question 12

dermatitis

Answer 12

inflammation of skin

Question 13

eczema

Answer 13

non contagious skin rash that produces itching, blistering, and scaling

Question 14

erythema

Answer 14

reddening of the skin due to dilation of dermal blood vessels in response to injury or inflammation

Question 15

keloid

Answer 15

elevated, enlarging fibrous scar usually initiated by an injury

Question 16

mole

Answer 16

fleshy skin tumor that is usually pigmented

Question 17

pediculosis

Answer 17

disease produced by an infestation of lice

Question 18

pruritus

Answer 18

itching of skin

Question 19

psoriasis

Answer 19

chronic skin disease characterized by red patch

Question 20

pustule

Answer 20

elevated pus-filled area on the skin

Question 21

seborrhea

Answer 21

hyperactivity of the sebaceous glands, causing greasy skin and dandruff

Question 22

ulcer

Answer 22

open sore

Question 23

urticaria

Answer 23

allergic reaction of the skin that produces redding, elevated patches

Question 24

melanocytes

Answer 24

produce the dark pigment melanin which absorbs UV light (skin color)

Question 25

deepest layer of the epidermis

Answer 25

stratum basale

Question 26

stratum corneum

Answer 26

layer of hard dead cells

Question 27

keratinization

Answer 27

get hard due to the cytoplasm filling with the protein keratin

Question 28

sebaceous gland

Answer 28

Secrete an oily mixture of fatty material and debris (sebum)
Sebum keeps the hair and skin soft, flexible, and waterproof