Skin

Question 1

How many layers of the skin are there?

Answer 1

3

Question 2

What are the three layers of the skin?

Answer 2

Epidermis
Dermis
Hypodermis

Question 3

Describe the structure of the epidermis.

Answer 3

Outer layer 
Protects the dermis
5 layers
-stratum corneum 
-stratum lucidum
-stratum granulosum
-stratum spinosum
-stratum basale 
. Melanocytes in the basale layer (responds to uv light controls pigmentation)

Question 4

Describe the structure of the dermis.

Answer 4

Deeper layer
Thicker
Consists of 
-sweat glands
-hair follicles 
-sebaceous glands
-arrector or pili muscles
-nerves and sensory receptors
-blood and lymphatic vessels

Question 5

Describe the hypodermis.

Answer 5

Fatty layer
Below the dermis
Helps insulate the body
Provides a protective padding

Question 6

What are the 5 main functions of the skin?

Answer 6

• sensation
• immunity
• synthesis of vitamin D
• secretion of sebum
• formation of chemicals