Integumentary system

Question 1

3 primary layers of skin

Answer 1

epidermis
demis
hypodermis (subcutaneous tissue)

Question 2

major functions of the epidermis

Answer 2

immune and fluid retention

Question 3

layers of epidermis

Answer 3

stratum corneum
stratum lucidum
stratum granulosum
stratum spinosum
stratum basale

Question 4

the epidermis is primarily composed of

Answer 4

keratinocytes

Question 5

what type of keratonocytes make up the basal layer of epidermis

Answer 5

basal cell keratinocytes

Question 6

major function of basal layer

Answer 6

rapid mitotic function

Question 7

how thick is basale layer

Answer 7

1-2 cell layers thick

Question 8

what cells are found in the basal layer

Answer 8

melanocytes
merkel cells

Question 9

how thick is spinosum layer

Answer 9

8-10 cells

Question 10

does the stream spinosum receive adequate nutrition from dermis

Answer 10

yes

Question 11

when you hear stratum spinosum, you should think

Answer 11

spacing - intermediate filaments and desmosomes

Question 12

what cells are found in stratum spinosum

Answer 12

langerhans cells

Question 13

describe langerhans cell

Answer 13

dendrite + macrophage

Question 14

how thick is stratum granulosum layer

Answer 14

3-6 cell layers

Question 15

does stratum granulosum receives adequate nutrition from dermis

Answer 15

no

Question 16

what process occurs in stratum granulosum – describe it

Answer 16

keratinization
organelles break down and keratin builds up

Question 17

what functional cells are found in stratum granulosum

Answer 17

NONE – no more functional cells above this layer

Question 18

how thick is stratum lucidum

Answer 18

~2

Question 19

what is stratum lucid composed of

Answer 19

dead keratin filled keratinocytes

Question 20

what is a major characteristic of stratum lucidum - describe it

Answer 20

eleidin - product of keratohyaline breakdown

more water resistance and gives characteristic lucidity

Question 21

how thick is stratum corneum

Answer 21

15-30 cells

Question 22

what is stratum corneum composed of

Answer 22

dead keratinocytes with strong intercellular connections and thick plasma membranes

Question 23

in what layer are the nucleus and organelles completely broken down

Answer 23

stratum corneum

Question 24

what is the dermis primarily composed of

Answer 24

connective tissue

Question 25

what major things are found in the dermis

Answer 25

hair follicles, sebaceous glands, apocrine/eccrine glands

Question 26

two primary layers in dermis

Answer 26

papillary reticular

Question 27

which layer in the dermis is thinner

Answer 27

papillary layer

Question 28

which layer in the dermis is thicker

Answer 28

reticular layer

Question 29

what is the papillary layer composed of

Answer 29

loos areolar connective tissue

Question 30

what is found in the papillary layer

Answer 30

capillary beds increased concentration of WBC

Question 31

what is the reticular layer composed of

Answer 31

dense connective tissue larger vessels

Question 32

what is the hypodermis/subcutaneous layer composed of

Answer 32

connective tissue adipose fat

Question 33

function of hypodermis and subcutaneous layer

Answer 33

provides energy storage and protects internal organs from trauma

Question 34

where is majority if innervation

Answer 34

dermis

Question 35

what gland is occluded in acne

Answer 35

sebaceous gland

Question 36

what type of bacteria can cause acne

Answer 36

anaerobic

Question 37

what type of scars can you get from acne

Answer 37

atrophic hypertrophic