CH. 4: Integumentary Terms

Question 1

skin

Answer 1

organ covering the body; made up of layers (also called cutaneous membrane)

Question 2

epidermis

Answer 2

outer layer of skin; protects the body from the external environment

Question 3

keratin

Answer 3

scleroprotein component of the horny, or cornified, layer of the epidermis; the primary component of the hair and nails

Question 4

melanin

Answer 4

dark pigment produced by melanocytes; amount present determines skin color

Question 5

hair

Answer 5

compressed, keratinized cells that arise from hair follicles

Question 6

nails

Answer 6

horny plates made from flattened epithelial cells; found on the dorsal surface of the ends of the fingers and toes

Question 7

sebaceous glands

Answer 7

secrete sebum (oil) into the hair follicles where the hair shafts pass through the dermis

Question 8

sudoriferous glands

Answer 8

tiny, coiled, tubular structures that emerge through pores on the skin’s surface and secrete sweat (also called sweat glands)

Question 9

dermis

Answer 9

inner layer of skin; responsible for its flexibility and mechanical strength

Question 10

hypodermis

Answer 10

layer between the dermis and the underlying tissues and organs; contains adipose tissue (fat), connective tissue, nerves, and blood vessels (also called subcutaneous layer)