Unit 2 - Integumentary System Key Terms

Question 1

Integumentary System

Answer 1

organ system including skin, hair and nails

Question 2

epidermis

Answer 2

the surface layer of the skin

Question 3

dermis

Answer 3

inner layer, composed largely of dense connective tissue, thicker than the epidermis

Question 4

hypodermis/subcutaneous layer

Answer 4

beneath dermis, not a true layer of skin

Question 5

5 layers - stratum corneum

Answer 5

dead cell layer

Question 6

5 layers - stratum lucidum

Answer 6

dying; only on palms and feet

Question 7

5 layers - stratum granulosum

Answer 7

mature cells

Question 8

5 layers - stratum spinosum

Answer 8

maturing cells

Question 9

5 layers - stratum basale

Answer 9

innermost

Question 10

melanocytes

Answer 10

specialized cells in the epidermis, produces melanin which provides skin color

Question 11

artery

Answer 11

delivers oxygen-rich blood from the heart to tissues of the skin

Question 12

vein

Answer 12

carries oxygen-poor blood to the heart from tissues of the skin

Question 13

alopecia

Answer 13

hair loss

Question 14

pruritus

Answer 14

intense itchiness

Question 15

eczema

Answer 15

inflammatory conditions of the skin

Question 16

cyst

Answer 16

small sac underneath the skin

Question 17

fissure

Answer 17

crack or break in skin

Question 18

macule

Answer 18

discolored lesion

Question 19

polyp

Answer 19

skin tags

Question 20

plaque

Answer 20

large, flat or slightly raised patch