integumentary system

Question 1

dermatology

Answer 1

study of skin

Question 2

melanocyte

Answer 2

cells that produce melanin & bring it to keratinocytes

Question 3

keratinocyte

Answer 3

cells that contain keratin (a tough protein that waterproofs & protects the skin)

Question 4

psoriasis

Answer 4

disorder in which keratinocytes divide & move too quickly to the stranum corneum (causing flaky scaled skin)

Question 5

callus

Answer 5

abnormal thickening of the epidermis

Question 6

dermal papillae

Answer 6

finger-like projections which cause ridges & grooves in the epidermis (fingerprints/footprints)

Question 7

Meisner’s corpuscles

Answer 7

touch receptors

Question 8

stretch marks

Answer 8

red/white streaks on the skin caused by small tears in the dermis from extreme stretching of the skin

Question 9

Pacinian corpuscles

Answer 9

pressure receptors

Question 10

melanin

Answer 10

brown-black skin pigment

Question 11

albinism

Answer 11

inability to produce melanin

Question 12

carotene

Answer 12

yellow-orange pigment in adipose tissue

Question 13

acne

Answer 13

inflammation of sebaceous glands

Question 14

burn

Answer 14

tissue damage from excessive heat, electricity, or chemicals

Question 15

athletes foot

Answer 15

fungal infection of the feet

Question 16

chickenpox

Answer 16

highly contagious viral infection

Question 17

shingles

Answer 17

caused by chickenpox virus, more painful

Question 18

cold sore

Answer 18

a sore usually in/around the mouth, caused by herpes virus

Question 19

alopecia

Answer 19

baldness

Question 20

bedsores

Answer 20

a constant deficiency of blood flow to a tissue caused by prolonged pressure

Question 21

eczema/dermatitis

Answer 21

itchy red skin inflammation’ (rash)

Question 22

5 functions of the skin

Answer 22

protection, synthesis of vitamin d, excretion, sensation, regulation of body temp.

Question 23

skins response to excessive heat/excessive cold

Answer 23

heat: increased blood flow to the skin surface to give off heat (vasodilation)
cold: decreased blood flow to the skin surface to conserve heat (vasoconstriction)

Question 24

3 major regions in the skin

Answer 24

epidermis, dermis, subcutaneous layer

Question 25

5 layers of the epidermis

Answer 25

stratum corneum: top layer stratum lucidum: only in thick areas of skin stratum granulosum: acts as a water repellant stratum spinosum: 8-10 layer stratum basale: bottom layer

Question 26

what layer of the epidermis isn't found in all regions of the body?

Answer 26

stratum lucidum

Question 27

2 regions of the dermis

Answer 27

papillary region, reticular region

Question 28

3 pigments that contribute to skin color

Answer 28

melanin, carotene, hemoglobin

Question 29

3 parts that makeup hair structure

Answer 29

shaft, root, follicle

Question 30

2 types of sudoriferous (sweat) glands

Answer 30

eccrine sweat glands, apocrine sweat glands

Question 31

3 types of skin cancer

Answer 31

basal cell carcinoma, squamous cell carcinoma, malignant melanoma

Question 32

3 types of burns

Answer 32

first, second, third-degree burns