Integumentary System

Question 1

name the seven functions of the skin:

Answer 1

protective coating, temporary storage of fat glucose salt and water, regulates body temperature, screens out uv rays, makes vitamin d, absorbs drugs, and provides sensory functions

Question 2

what are the three layers of skin?

Answer 2

the epidermis, dermis, and the subcutaneous layer

Question 3

what is the outermost layer of the epidermis called?

Answer 3

the stratum corneum

Question 4

how many layers does the epidermis have?

Answer 4

5 layers

Question 5

what does the stratum corneum defend the body against?

Answer 5

bactera/infection

Question 6

what is the purpose of papillae?

Answer 6

to help with grip

Question 7

melanocytes contain a pigment called what?

Answer 7

melanin

Question 8

what does melanin do?

Answer 8

it gives color to the skin

Question 9

which layer of skin contains connective tissue, blood vessels, nerve endings, muscles, hair follicles, and oil and sweat glands?

Answer 9

the dermis/the middle layer of skin

Question 10

what layer is below the dermis?

Answer 10

the subcutaneous layer

Question 11

what is the subcutaneous layer made of?

Answer 11

loose connective tissue

Question 12

what is the part of the hair that is implanted in the skin?

Answer 12

the root

Question 13

what is the hollow tube the hair root is implanted in called?

Answer 13

the follicle

Question 14

what is the visible part of the hair called?

Answer 14

the shaft

Question 15

what is the outer layer of hair called?

Answer 15

the cortex

Question 16

what is the inner layer of hair called?

Answer 16

the medulla

Question 17

what condition occurs when normal hair is replaced by very short, transparent hair?

Answer 17

alopecia

Question 18

what muscle causes the skin to pucker around a hair when exposed to a sudden chill?

Answer 18

the arrector pili muscle

Question 19

what is the medical term for sweat glands?

Answer 19

sudoriferous glands

Question 20

where are sudoriferous glands mainly found?

Answer 20

on the palms, soles of feet, and underarm areas

Question 21

the secretions from the sudoriferous glands produce an odor when they are mixed with what?

Answer 21

bacteria

Question 22

what is the medical term for glands that produce oil?

Answer 22

sebaceous glands

Question 23

what is the oil that is secreted from the sebaceous glands called?

Answer 23

sebum

Question 24

what common chronic disorder of the sebaceous glands is caused by overproduction of sebum?

Answer 24

acne vulgaris

Question 25

what is inflammation of the skin that produces a rash caused by coming into contact with a substance or by stress called?

Answer 25

contact dermatitis

Question 26

what type of burn is superficial?

Answer 26

first degree burns

Question 27

what type of burn causes blisters?

Answer 27

second degree burns

Question 28

what type of burn causes complete destruction of the epidermis, dermis and subcutaneous layer and can be life-threatening?

Answer 28

third degree burns

Question 29

what type of burn is the most painful?

Answer 29

second degree burns

Question 30

do third degree burns hurt? why or why not?

Answer 30

no they are not painful because the burn also destroys the nerves

Question 31

what type of skin cancer may appear suddenly as a brown, irregular patch?

Answer 31

a malignant melanoma

Question 32

what is the primary cause of skin cancer?

Answer 32

uv rays/the sun

Question 33

what disorder of the integumentary system can cause potential infection of a newborn baby?

Answer 33

genital herpes

Question 34

what condition is contagious, causes cracks and scaling and is usually contracted in public showers or baths?

Answer 34

athlete's foot

Question 35

what is the medical term for the nail bed?

Answer 35

the matrix

Question 36

the hair follicle originates in which layer of the skin?

Answer 36

the dermis

Question 37

which layer of skin is nonvascular?

Answer 37

the epidermis

Question 38

the breakdown of which protein causes the skin to sag and wrinkle?

Answer 38

collagen

Question 39

what is the medical term for the clear, scaly layer of keratin on a strand of hair?

Answer 39

the cuticle

Question 40

what is the indentation at bottom of a hair follicle that has blood vessels that nourishes the hair called?

Answer 40

the papilla

Question 41

what is the visible part of a nail that is made out of keratin called?

Answer 41

the nail plate

Question 42

what is the skin beneath the nail plate called?

Answer 42

the nail bed

Question 43

what is the crescent moon-shaped part of the nail called?

Answer 43

the lunula