Integumentary system

Question 1

Functions of the integumentary system

Answer 1

• Two-way protective barrier
• Temperature regulation
• Houses sensory receptors
• Secretes important fluids

Question 2

organs of the integumentary system

Answer 2

• skin
• hair
• nails
• sebaceous glands
• sweat glands

Question 3

skin is also called

Answer 3

integument or cutaneous membrane

Question 4

function of integumentary

Answer 4

• protection

Question 5

how does skin protect?

Answer 5

keeps out pathogens and harmful substances and prevents critical body fluids from escaping

Question 6

where are the sensory receptors located?

Answer 6

located within the middle layer of skin

Question 7

what do sensory receptors detect?

Answer 7

temperature, pain, touch, pressure

Question 8

what do sweat glands in the integumentary system do?

Answer 8

assist body in maintaining internal temperature. create cooling effect when sweat evaporates

Question 9

what do sebaceous glands do?

Answer 9

oil glands, produce sebum, lubricates the skin surface

Question 10

to cool skin?

Answer 10

sweat evaporation, dilate superficial blood vessels to release heat

Question 11

to conserve heat?

Answer 11

constrict superficial blood vessels to keep warm blood away from the surface, and continuous fat layer acts as insulation

Question 12

three parts of the skin

Answer 12

epidermis, dermis, subcutaneous layer

Question 13

description of epidermis?

Answer 13

thin, outer membrane layer

Question 14

description of dermis?

Answer 14

middle, fibrous tissue layer

Question 15

subcutaneous layer

Answer 15

innermost layer of fatty tissue

Question 16

what is epidermis composed of?

Answer 16

stratified squamous epithelium

• flat scale like cells
• arranged in overlapping layers called strata

Question 17

does the epidermis layer have blood supply?

Answer 17

has no blood supply or connective tissue. depends on deeper layers of skin for nourishment

Question 18

basal layer of epidermis

Answer 18

cells continuously grow and push old cells toward surface

Question 19

what happens during the process of old cells coming out?

Answer 19

cells shrink, die, and fill with hard protein called keratin. keratinized cells allow skin to act as barrier to infection

Question 20

what are melanocytes?

Answer 20

• special cells of basal layer
• produce black pigment melanin
• gives skin color
• protects against ultraviolet rays of sun

Question 21

where is the basal layer?

Answer 21

located innermost in the epidermis layer

Question 22

where is dermis layer located and description?

Answer 22

located between epidermis and subcutaneous layer. is a living tissue with very good blood supply

Question 23

what does dermis mean?

Answer 23

“true skin”

Question 24

what is the dermis layer composed of?

Answer 24

connective tissue and collagen fibers. strong fibrous protein give dermis flexible strength

Question 25

what does the dermis house?

Answer 25

hair follicles, sweat glands, sebaceous glands, blood vessels, lymps vessels, sensory receptors, nerve fibers, musvle fibers

Question 26

description of subcutaneous layer?

Answer 26

third and deepest layer, protects the deeper tissues of body, acts as insulation for heat and cold

Question 27

what are subcutaneous layer composed of?

Answer 27

composed of fat cells called lipocytes