The Integumentary System

Question 1

Why is the skin considered an organ?

Answer 1

The skin is an organ because it consists of different tissues that have specific functions

Question 2

What are the two main parts of the skin?

Answer 2

The epidermis and the dermis

Question 3

Information card.

Answer 3

Epidermis:

• Most superficial layer of the skin.
• Stratum corneum (upper layer) & germinative layer (deeper).
• Germinative layer bathed in fluid– provision of oxygen and nutrients.
• No blood vessels or nerve endings in epidermis.
• Keratinised stratified squamous epithelium – thin flat and non-nucleated.

Question 4

What are the five ‘Stratum’ layers of the epidermis?

Answer 4

Can - Corneum
Luke - Lucidum
Get - Granulosum
Some - Spinosum
Beer - Basale

Question 5

In the Epidermis

90% keratinocytes - cells containing keratin
8% melanocytes - cells that make melanin

True or False

Answer 5

True