Integumentary System Flashcards Preview

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Flashcards in Integumentary System Deck (38):
1

dermatology

Medical specialty dealing w diseases of integumentary system

2

Functions of skin

Thermoregulation
Blood reservoir
Protection
Cutaneous sensation (touch)
Excretion & absorption
Synthesis of vitamin d

3

Epidermis gets its blood supply from where

Avascular

4

Dermis recieves blood from

Branches of arteries supply skeletal muscles

Cutaneous & papillary plexus

Venous plexuses drain blood from dermis into larger subcutaneous veins

5

What are the arteries that supply the skin directly with blood

Cutaneous and papillary

6

Oil glands are also called

Subacious glands

7

Myocrine glands are also called

Eccrine glands

8

Another name for sweat gland is

Sudoriferous gland

9

What is the papillary layer of the dermis

Areolar

10

What is the most common cell of integumentary/dermis?

Keratinocytes

11

What is the reticular layer of dermis?

Dense/irregular

12

What are the 2 major layers of skin?

Epidermis (epithelial tissue)
Dermis (connective tissue)

13

What is another name for the hypodermis

Subcutaneous layer

Fat

14

Epidermis characteristics

Keratinized stratified squamous epithelium
Contains 4 major cells

15

What are the 4 major cells of the epidermis

Keratinocytes
Melanocytes
Dendritic cells
Tactile

16

Keratinocytes

Orange/yellow

Produces keratin protein
Waterproof & flexible

17

Melanocytes

Black

18

dendritic cells

Phagocytic

Eats

19

Tactile

Cells that let you feel things

20

Most common cell in integument

Keratinocytes

90%

21

How many layers of epidermis

4 major layers for thin


5 major layers for thick

22

What are the layers of the epidermis

Stratum basale
Stratum spinosum
Stratum granulosum
Stratum corneum

23

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Layers of epidermis

Basale
Spinosum
Granulosum
Lucidun
Corneum

24

Stratum basale

Undergoes mitosis

One layer thick

Waterproof

25

Stratum spinosum

Location of dendritic cells (phagocytic)

Varies in # of layers (3-10)

Cells function is for ribosomes produce keratin

26

Stratum granulosum

Cell cytosol is now filled w keratin and the nuclease ceases function & becomes flat

27

Stratum lucidum

Only in "thick" skin

Palms/soles

28

Stratum corneum

10-100 cells thick
Continuously sloughing off

Callus (over 100 cells)

29

Keratinazation

Cell becoming full of keratin

30

Dandruff

Stratum corneum coming off in chunks

31

Karatinocytes

Most common

32

Most common protein in integumentary

Collagen

33

Most common cell in body

Res blood cell

34

Dermis

Composed of connective tissue containing collagen and elastic fibers

35

How many layers of dermis

2

Papillary
Reticular

36

Epidermal ridges

From papillary layer consisting of loose areolar connective tissue

FINGERPRINTS

37

Dermatones

Lines of cleavage or tension lines

Road map for plastic surgeons

38

Integumentary system

Composed of skin, hair, oil, sweat glands, nails and sensory receptors