bozeman integumentary system

Question 1

what 3 things is the integumentary system made of?

Answer 1

1. skin
2. hair
3. nails

Question 2

what are the 4 functions of the integumentary system?

Answer 2

1. protection against foreign materials
2. sensation
3. thermoregulation
4. vitamin D synthesis

Question 3

what kind of sensation is felt with the integumentary system?

Answer 3

receptors are used to sense touch and pain

Question 4

how does the integumentary system help to thermoregulate?

Answer 4

by goosebumps, vasodilation, carrying heat away, sweat glands

Question 5

how is vitamin D synthesis important for the body?

Answer 5

sunlight brings phosphorus and calcium into the bones

Question 6

what are the layers of the epidermis in order?

Answer 6

1. stratum corneum
2. stratum lucidum
3. stratum granulosum
4. stratum spinosum
5. stratum basale

Question 7

how are the 5 layers of the epidermis remembered?

Answer 7

Come
Let’s
Get
Sun
Burned

Question 8

what is the main thing about stratum corneum?

Answer 8

this is the dead skin layer that gets replaced with cells from the basale

Question 9

what is the 2 main things about the stratum basale?

Answer 9

1. mitosis occurs in the basale, then new skin cells push upwards towards corneum
2. holds the dermis & epidermis together

Question 10

where is stratum lucidum only found in?

Answer 10

only found in thick skin, so palms of hands and feet

Question 11

what is the main thing about stratum lucidum?

Answer 11

thick, waxy, protective layer

Question 12

what is the main thing about stratum granulosum?

Answer 12

the compressed, dying layer that gets its nutrients by diffusion

Question 13

where is the dermis located?

Answer 13

below the epidermis

Question 14

what 2 things do the capillaries consist?

Answer 14

1. arterioles
2. veins

Question 15

what are the 2 types of glands found in the dermis?

Answer 15

1. sebaceous
2. sudoriferous

Question 16

what are sebaceous glands?

Answer 16

release oil to keep skin & hair waterproof

Question 17

what are sudoriferous glands?

Answer 17

sweat glands to keep cool

Question 18

what are the 2 types of tactile receptors found in the dermis?

Answer 18

1. pain receptors
2. sense receptors

Question 19

what are pain receptors in the dermis?

Answer 19

prevent from damaging the skin by warning upcoming pain

Question 20

what are 2 types of sense receptors in the dermis?

Answer 20

1. the ones near the top sense light touch
2. the ones near the bottom sense deep touch

Question 21

what is another word for the subcutaneous layer of the skin?

Answer 21

hypodermis

Question 22

what are the 7 structures of the hypodermis?

Answer 22

1. reticular fibers
2. adipocytes
3. mesenchymal cells
4. elastic fibers
5. collagen fibers
6. fibroblasts
7. macrophages

Question 23

what are the 2 accessory structures of the integumentary system?

Answer 23

1. hair
2. nails

Question 24

what are the 3 parts of the hair in the accessory structures of the integumentary system?

Answer 24

1. hair bulb
2. hair matrix
3. hair papilla

Question 25

what is the hair papilla?

Answer 25

vascular structure that supplies nutrients

Question 26

what is the hair matrix?

Answer 26

1 thick layer that makes new cells

Question 27

what is the hair bulb?

Answer 27

layer of dead cells that get keratinized (protein)

Question 28

what is the order of the accessory structure of hair (6)?

Answer 28

1. arrector pili muscle 2. sebaceous gland 3. apocrine sweat gland 4. hair bulb 5. hair matrix 6. hair papilla

Question 29

what are nails made of?

Answer 29

made of keratin protein made by the cells

Question 30

what are the 4 parts of the nail?

Answer 30

1. nail root 2. nail matrix 3. eponychium 4. hyponychium

Question 31

where is the nail root found?

Answer 31

under the skin

Question 32

what does the nail matrix do?

Answer 32

cleans out old dead cells and creates new skin cells

Question 33

what is the eponychium?

Answer 33

cuticle

Question 34

what is the eponychium?

Answer 34

thick layer of living cells

Question 35

where is the hyponychium?

Answer 35

under the nail near the tip of it

Question 36

what is the hyponychium?

Answer 36

a barrier for foreign materials