Ch. 5 Integumentary System

Question 0

What is underneath the dermis?

Answer 0

The hypodermis (or subcutaneous layer)

Question 1

What are the two layers of the skin?

Answer 1

Epidermis and dermis

Question 2

What is the epidermis composed of?

Answer 2

Keratinized stratified squamous epithelium

Question 3

Describe stratum basale and its function?

Answer 3

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

Question 4

Keratinocytes….

Answer 4

Produce keratin

Question 5

What is the function of keratin?

Answer 5

It toughens skin

Question 6

What produces melanin?

Answer 6

Melaonocytes

Question 7

List characteristics of dermis.

Answer 7

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

Question 8

What is the papillary region made up of?

Answer 8

Connective tissue w/collagen and elastic fibers

Question 9

What is the reticular region?

Answer 9

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

Question 10

Sebaceous=

Answer 10

Oil

Question 11

What are sudoriferous glands?

Answer 11

Sweat glands

Question 12

Ceruminous glands produce?

Answer 12

Ear wax

Question 13

What is the inability to make pigment?

Answer 13

Albinism

Question 14

What is vitiligo?

Answer 14

The loss of melanin

Question 15

Describe shaft of hair.

Answer 15

Its the portion that is out of the skin

Question 16

What is the root of hair?

Answer 16

The part that is firmly in the skin

Question 17

What is a hair follicle?

Answer 17

The root and all of the surrounding tissue in the skin

Question 18

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

Answer 18

The bulb

Question 19

Explain the arrector pili.

Answer 19

The muscle that attaches to the root, autonomic control

Question 20

Where are the sebaceous glands released?

Answer 20

Out onto the shaft

Question 21

Describe the growth of hair.

Answer 21

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

Question 22

Name and describe the types of sudoriferous glands.

Answer 22

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

Question 23

The hypodermis is also known as….

Answer 23

The subcutaneous layer

Question 24

How many functions are there of the skin?

Answer 24

6

Question 25

Explain the protection function of the skin.

Answer 25

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

Question 26

What is thermoregulation?

Answer 26

Cools the skin when hot and holds temp when cold

Question 27

Which function of the skin involves water and salt?

Answer 27

Excretion

Question 28

What are cutaneous sensations involving the skin?

Answer 28

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

Question 29

What does the skin absorb?

Answer 29

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

Question 30

What is involved in synthesis of Vitamin D?

Answer 30

Precursor is activated in synthesis process

Question 31

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

Answer 31

Thin

Question 32

What areas does the thick layer of skin cover?

Answer 32

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

Question 33

What are the four steps in wound healing?

Answer 33

Inflammation, migration, proliferation, and maturation

Question 34

What is the inflammatory phase?

Answer 34

Fills in hole, plugs it, and stops bleeding

Question 35

What happens in the migratory phase?

Answer 35

Cells come to work, fibroblasts, macrophages

Question 36

Describe proliferative phase.

Answer 36

Cells fill in wound and dissolve inflammatory stuff

Question 37

What is remodeled new skin?

Answer 37

Maturation phase

Question 38

Discuss the types of burns.

Answer 38

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