ch. 16 anatomy of the skin

Question 1

what are the 3 layers of the skin

Answer 1

epidermis, dermis, subcutaneous layer

Question 2

epidermis

Answer 2

layer 1: cellular membrane layer, containing keratin

Question 3

flat and scale-like cells in the epidermis

Answer 3

squamous epithelium

Question 4

epithelium

Answer 4

covering of both the internal and external surfaces of the body

Question 5

basal layer

Answer 5

the deepest layer of the epidermis, that is always growing and multiplying

Question 6

superficial layer

Answer 6

stratum corneum

Question 7

how is keratin produced?

Answer 7

the basal layer divides and pushes the younger cells going to the stratum corneum = flatten, shrink, lose their nuclei, and die

Question 8

melanocytes

Answer 8

contain melanin that is transferred to other epidermal cells and gives the color of the skin

Question 9

t/f: the # of melanocytes is the same for everyone as well as the amount of melanin

Answer 9

false; melanin count is different within each cell

Question 10

dermis

Answer 10

layer 2: dense, fibrous, connective tissue layer, containing collagen

Question 11

elastin

Answer 11

protein that is elastic and helps the skin return to its original position

Question 12

collagen

Answer 12

fibrous protein material in bone, cartilage, tendons, and ligaments

Question 13

subcutaneous layer

Answer 13

layer 3: thick, fat-containing tissue

Question 14

what are the 2 cutaneous layers

Answer 14

epidermis and dermis

Question 15

adipocytes