Ch. 5 Integumentary System Flashcards Preview

A&P Test 2 Ch. 5,6,7,8 > Ch. 5 Integumentary System > Flashcards

Flashcards in Ch. 5 Integumentary System Deck (39):
0

What are the two layers of the skin?

Epidermis and dermis

1

What is underneath the dermis?

The hypodermis (or subcutaneous layer)

2

What is the epidermis composed of?

Keratinized stratified squamous epithelium

3

Describe stratum basale and its function?

Its a single row of cubical epithelium and it produces new cells through cell division

4

Keratinocytes....

Produce keratin

5

What is the function of keratin?

It toughens skin

6

What produces melanin?

Melaonocytes

7

List characteristics of dermis.

Second deeper layer
Alive layer of skin
Divided into 2 parts (papillary & reticular)

8

What is the papillary region made up of?

Connective tissue w/collagen and elastic fibers

9

What is the reticular region?

Dense connective tissue, collagen bundles, adipose cells, hair follicles

10

Sebaceous=

Oil

11

What are sudoriferous glands?

Sweat glands

12

Ceruminous glands produce?

Ear wax

13

What is the inability to make pigment?

Albinism

14

What is vitiligo?

The loss of melanin

15

Describe shaft of hair.

Its the portion that is out of the skin

16

What is the root of hair?

The part that is firmly in the skin

17

What is a hair follicle?

The root and all of the surrounding tissue in the skin

18

What is the portion of the hair where blood vessels enter?

The bulb

19

Explain the arrector pili.

The muscle that attaches to the root, autonomic control

20

Where are the sebaceous glands released?

Out onto the shaft

21

Describe the growth of hair.

There is a resting stage 15% of the time and a growing phase 85% of the time

22

Name and describe the types of sudoriferous glands.

Eccrine sweat glands that help regulate body temperature
Apocrine sweat glands "nervous sweat" excitement, axilla and groin
Mammary gland-modified to produce milk instead of sweat

23

The hypodermis is also known as....

The subcutaneous layer

24

How many functions are there of the skin?

6

25

Explain the protection function of the skin.

The skin is protected by water, bacteria, and uv light waves

26

What is thermoregulation?

Cools the skin when hot and holds temp when cold

27

Which function of the skin involves water and salt?

Excretion

28

What are cutaneous sensations involving the skin?

Touch, pressure, vibration, pain, temp, itch, tickle

29

What does the skin absorb?

Gases O2 and CO2, drugs, fat soluble vitamin (A, D, E, K)

30

What is involved in synthesis of Vitamin D?

Precursor is activated in synthesis process

31

What type of skin is all over the body except palms, digits, and soles?

Thin

32

What areas does the thick layer of skin cover?

Palms, digits, soles, dermal papillae deeper and more numerous

33

What are the four steps in wound healing?

Inflammation, migration, proliferation, and maturation

34

What is the inflammatory phase?

Fills in hole, plugs it, and stops bleeding

35

What happens in the migratory phase?

Cells come to work, fibroblasts, macrophages

36

Describe proliferative phase.

Cells fill in wound and dissolve inflammatory stuff

37

What is remodeled new skin?

Maturation phase

38

Discuss the types of burns.

1st degree-epidermis
2nd degree- dermis partial
3rd degree- burned through the dermis