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Flashcards in Week 3 Skin Deck (34):
1

Starting from most superficial to deep list the following in order: muscle, hypodermis/superficial fascia/SQ, dermis, epidermis, deep fascia

epidermis-->dermis-->hypodermis-->deep fascia-->muscle

2

define tissue

group of cells with a common fxn

3

define histology:

study of microscopic anatomy. includes cellular level, tissue level and organ level

4

what is the role (2) of connective tissue?

protections and support

5

acidic dyes bind with what ion?

acidic dies carry a negative charge and bind to cationic cell/tissue components

6

what are some things inside the cell that will bind with acidic dies?

what has a positive charge? mitochondria, secretory granules, cytoplasm, basement membrane

7

basic dies will bind what?

carry a net positive charge and will therefore bind anionic cell/tissue components

8

what is the most common acid dye?

eosin

9

what sort of things will basic dyes bind?

DNA, RNA, carboxyl groups of proteins, sulfate, cartilage matrix

10

what is the most common basic dye?

hematoxylin

11

what is an H&E stain?

hematoxylin and eosin stain that gives the best overall picture of microscopic structures

12

what is the integument composed of? 2

skin and accessory structures

13

the accessory structures of the integument include: (4

sebacous glands, sudoriferous glands, hair, nails

14

how are glands and follicles of the integument formed?

down growths of epidermis

15

what are the major functions of the integument? (5)

protection, sensation, temp reg, metabolic, waste elimination

16

what are the two layers of the skin

epidermis and dermis

17

contrast the epidermis from the dermis. location, make-up, derived from what

epidermis: superficial, keratinized saquamous epithelium, ectoderm derived dermis: deep, connective tissue, mesoderm derived

18

describe the vasularity and innervation of epithelium

avascular but innervated (rely on underlying connective tissue to supply nutrients)

19

what would a histologist classify as thick skin?

they look at the thickness of the epidermis. thick skin is only seen at palms and souls of feet (no hair follicles here)

20

what would a gross anatomist classify as thick skin?

they look at the epidermis and dermis. thickest skin is the upper back

21

what is connective tissue?

cells in an extracellular matrix

22

all connective tissues are derived from what stem cell?

mesenchymal

23

describe the vasularity of connnective tissue

varies in vascularity: avascualr=cartilage vascular=bone

24

what makes up (2) the ECM

protein fibers and ground substance

25

what protein fibers are seen in the ECM?

collagen, reticular, elastic

26

what is seen in ground substance?

glycoaminoglycans, proteoglycans, multiadhesive glycoproteins

27

what are the five types of connective tissue proper?

loose, reticular, dense regular, dense irregular, adipose

28

what are the two types of specialized connective tissue?

blood, supporting connective tissue (cartilage and bone)

29

what are the layers of the dermis 2

papillary layer: superficial; areolar connective tissue reticular layer: deep; dense irregular connective tissue with more collagen

30

what is the superficial fascia primarily composed of?

AKA hypodermis. white adipose tissue and loose connective tissue

31

what is the deep fascia primarily composed of

dense irregular connective tissue

32

what are these layers

Q image thumb

top: slanted arrow is nothing

epidermis and dermis

hypodermis

deep fascia

muscle 

 

33

what are these layers?

Q image thumb

1. papilary layer

2. reticular layer 

(epidermis included both the regions above the papillary layer, keratinized surface and lower stratified squamous eptihelaial layer

34

what is these

Q image thumb

1. dermis

2. hypodermis

3. epidermis

4. white adipose in hypodermis 

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