Integumentary

Question 1

2 primary levels of skin

Answer 1

Epidermis and dermis

Question 2

Functions of skin

Answer 2

Protection, excretion, homeostasis of body, production of melanin, keratin, vit d, storage of lipids, detection, coordination of immune response

Question 3

2 types of skin

Answer 3

Thick skin 5 layers

Thin skin 3 or 4 layers

Question 4

Epidermal layers

Answer 4

1. Stratum basale
2. stratum spinosum
3. Stratum granulosum
4. Stratum lucidim
5. Stratum corneum

Question 5

Explain stratum basale

Answer 5

Attach to basement by hemidemosomes, only layer that goes through mitosis.

Question 6

Explain stratum Spinosum

Answer 6

8-10 layers, demisomes present. Giive strength to dermis, lots of mRNA

Question 7

Explain stratum granulosm

Answer 7

Thin, where keratin production begins, nucleus degenerates

Question 8

Explain stratum lucidim

Answer 8

Clear, no nucleus present. No thin ski , cells flat and packed together with proteins

Question 9

Explain stratum corneum

Answer 9

Horney layer. Keratin filled. Outermost layer

Question 10

What factors influence skin color

Answer 10

Type and amount of melanin, carotene, body temp-how much blood is in skin

Question 11

Dermis’ two layers

Answer 11

papillary and reticular layer

Question 12

Dermis main function

Answer 12

Support epidermis

Question 13

Describe papillary layer

Answer 13

More superficial than reticular ,contains sensory neurons, areolar and loose connective tissue

Question 14

Function of papillary layer

Answer 14

Supply blood and nutrients to epidermis

Question 15

Reticular layer

Answer 15

Hair follicles, glands, receptors, bigger blood vessels, arector pili

Question 16

Hypodermis function

Answer 16

Mostly adipose and areolar tissue, connects skin to underlying tissue

Question 17

Sabaceous glands

Answer 17

Associated with hair, become active puberty. Sebum keeps hair and skin flexible

Question 18

Sweat glands

Answer 18

Merocrine-most numerous. Not associated hair, produce perspiration

Aprocrine- associated w hair, found in areola. Armpits and anus

Question 19

Ceruminous glands

Answer 19

Ear canals- make ear wax

Question 20

Mammary glands

Answer 20

Produce milk

Question 21

Why are nails important

Answer 21

Ridges in nails can be associated with thyroid problems

Question 22

Reticular layer is made of what tissue

Answer 22

Connective

Question 23

Epidermis is what kind of tissue

Answer 23

Keratinized stratified epithelial

Question 24

Dermis is made up

Of what tissue

Answer 24

Connective