Chapter 4: The Integumentary System

Question 1

Skin

Answer 1

1. Dry body membrane exposed to air.
2. Also called cutaneous membrane

Question 2

Integumentary System

Answer 2

1. Skin and accessory organs
2. Literally means covering

Question 3

Functions of Integumentary System

Answer 3

1. Protects deeper tissue from mechanical damage (bumps)
2. Chemical damage (acids/bases)
3. Microbe damage
4. UV radiation
5. Thermal (Heat/Cold)
   6.Temperature regulation
6. Aids in secretion of urea and uric acid
7. Synthesizes vitamin D

Question 4

Epidermis

Answer 4

1. Outer layer of the skin
2. Made up of stratified squamous epithelium.
3. Avascular-no blood supply of its own.

Question 5

Dermis

Answer 5

1. Deep layer of skin
2. Composed of irregular dense connective tissue.

Question 6

How Blisters form

Answer 6

1. Epidermis and Dermis are closely fitted together.
2. Burn or friction may cause them to separate, allowing interstitial fluid to accumulate between the layers.

Question 7

Subcutaneous

Answer 7

1.Below the skin
2. Shock absorber and insulates the deeper tissues from extreme temp change outside body.

Question 8

Hypodermis

Answer 8

1. Adipose tissue beneath the skin.
2. Not considered part of the skin, but anchors skin to underlying organs and provides site for nutrient storage.

Question 9

Keratinocytes

Answer 9

1. Keratin-producing cells of the epidermis

Question 10

Keratin

Answer 10

1. Tough insoluable protien found in tissues such as hair, nails, and epidermis of the skin.