Chapter 6

Question 1

The integumentary system includes

Answer 1

skin, nails, hair and glands

Question 2

dermatology is the study of

Answer 2

the integumentary system

Question 3

the largest organ of the body

Answer 3

skin

Question 4

skin is made up of

Answer 4

the epidermis and the deeper dermis

Question 5

thick skin covers…

Answer 5

the palms, soles of feet, surfaces of fingers and toes (contains sweat glands)

Question 6

thin skin covers…

Answer 6

covers the rest of the body and contains hair follicles, and sebaceous glands as well as sweat glands

Question 7

six functions of skin

Answer 7

resistance to trauma and infection, barrier functions, vitamin D synthesis, sensation, thermoregulation, nonverbal communication

Question 8

the epidermis is

Answer 8

keratinized stratified squamous epithelium

Question 9

5 types of cells in epidermis

Answer 9

stem cells, keratinocytes, melanocytes, tactile, dendritic

Question 10

strata of the epidermis

Answer 10

stratum basale, stratum spinosum, stratum granulossum, stratumlucidum

Question 11

the dermis is

Answer 11

a connective tissue layer beneath the epidermis that is composed mainly of collagen but contains elastic and reticular fibers, fibroblasts

Question 12

two zones of the dermis

Answer 12

papillary layer and reticular layer

Question 13

hypodermis or subcutaneous tissue has

Answer 13

an indistinct boundary but contains more areolar and adipose tissue; it binds skin to the underlying tissues

Question 14

skin color is produced by

Answer 14

pigment molecules

Question 15

2 forms of melanin

Answer 15

brownish-black eumalanin and reddish-yellow phemelanin which contains sulfur

Question 16

accessory organs of the skin

Answer 16

hair, nail, cutaneous glands

Question 17

hair and nail are composed mostly of

Answer 17

hard keratin

Question 18

a hair is also known as a

Answer 18

pilus

Question 19

3 different types of hair

Answer 19

languo, vellus, terminal

Question 20

3 zones of hair

Answer 20

bulb, root, shaft

Question 21

3 layers of hair

Answer 21

medulla, cortex, cuticle

Question 22

a diagonal tube that extends into the dermis and even the hypodermis

Answer 22

hair follicle

Question 23

stages of hair growth

Answer 23

anagen, catagen, telogen

Question 24

aplopecia

Answer 24

thinning of hair

Question 25

hirsutism

Answer 25

excessive hairiness

Question 26

clear, hard derivatives of the stratum corneum composed of thin, scaly, dead cells filled with parallel fibers of hard keratin

Answer 26

fingernails and toenails

Question 27

nail plate includes

Answer 27

nail body, nail root, the free edge overhanging the tip of finger or toe

Question 28

the visible attached part of the nail

Answer 28

nail body

Question 29

nail root extends

Answer 29

underneath the over laying skin

Question 30

nail bed

Answer 30

the sin underlying the nail plate

Question 31

2 kinds of sweat glands

Answer 31

apocrine, merocrine

Question 32

produce an oily secretion call sebum

Answer 32

sebaceous glands

Question 33

found only in external ear canal

Answer 33

ceruminous glands

Question 34

milk-producing glands

Answer 34

mammary glands