The Integumentary System

Question 1

older cells that harden with age = keratinization

Answer 1

keratinocytes

Question 2

What are the layers of the epidermis?

Answer 2

stratum corneum
lucidum
granulosum
spinosum
germinativum/basale

Question 3

Langerhans cells of the skin

Answer 3

stimulates immune defense

Question 4

which layer is keratin produced?

Answer 4

stratum granulosum

Question 5

What is jaundice?

Answer 5

buildup of bilirubin
yellow skin

Question 6

a skin condition in which the skin cannot synthesize melanin

Answer 6

albinism

Question 7

two components of dermis

Answer 7

superficial papillary layer
deeper reticular layer

Question 8

area where hairs are produced

Answer 8

hair follicles

Question 9

muscle that pulls hair perpendicular to surface of skin in response to threatening situation or cold temperatures

Answer 9

arrector pili muscle

Question 10

hair shaft

Answer 10

dead epidermal cells

Question 11

the two major types of glands in the skin

Answer 11

sebaceous and sweat glands

Question 12

the two types of sweat glands

Answer 12

merocrine/eccrine =sweat pores

apocrine = groin, arm pits

Question 13

how does the skin respond to injuries and wounds

Answer 13

inflammation

Question 14

signs of inflammation

Answer 14

SHARP
swelling, heat, altered function, redness, pain

Question 15

T or F. Shallow breaks in the skin cause epithelial cells to divide more rapidly

Answer 15

True!

Question 16

abrasion

Answer 16

outer layer of skin rubbed or scratched off

Question 17

laceration

Answer 17

wound with smooth or jagged edge from a tearing or scraping action

Question 18

penetrating wound

Answer 18

made by a sharp instrument passing through the skin

Question 19

avulsion

Answer 19

flaps of skin are torn loose or pulled off completely

Question 20

describe the healing process of wounds

Answer 20

• blood = clots
• scabs as it dries = protects underlying tissue
• fibroblasts move to site of injury to form new collagen fibers
• phagocytic cells remove dead cells and debris
• scab falls off, tissue replaced