1. Integumentary System
SKIN

2. SKIN’S IMPORTANT FUNCTION
1. Forms a barrier against disease-causing microbes.

3. SKIN’S IMPORTANT FUNCTIONS
2. Helps keep water in the body.

4. SKIN’S IMPORTANT FUNCTIONS
3. Eliminates waste-sweating

5. SKIN’S IMPORTANT FUNCTIONS
4. Maintains Temperature
Blood vessels enlarge when you become too warm to help cool you off.
Sweat gland also produce perspiration to help cool you off.

6. SKIN’S IMPORTANT FUNCTIONS
5. Gathers information
Nerve tissue in the dermis help detect pain, pressure and temperature

7. SKIN’S IMPORTANT FUNCTIONS
6. Produces Vitamin D
Skin produces vitamin D in the presence of sunlight.
Only a few minutes of sunlight is needed to produce all the vitamin D you need in a day.
Vitamin D helps your body absorb Calcium for your food for your bones.

8. LAYERS OF THE SKIN EPIDERMIS The outer most layer of skin.
NO blood vessels or nerve cells.
New skin cells are produced here.
Old cells die at about two weeks.
Dead cells protect, cushion and carry away bacteria when shed.
Tattoos are created in the dermis

9. LAYERS OF THE SKIN DERMIS The inner layer of skin. Dermis contains:
Nerves
Blood vessels
Sweat glands
Hairs
Oil glands

11. Openings in the skin to release perspiration and oils
PORES
Openings in the skin to release perspiration and oils

12. FOLLICLES Found in the dermis Hair grows from the follicle
Hair above the surface is made of dead cells
Structures in which strands of hair grow within the dermis

13. CARING FOR YOUR SKIN Healthy Diet Keep skin clean
Limit sun exposure-wear sunscreen
Drink water…