1. skin
Pages

2. Skin The skin is the largest organ in your body!
If you were to stretch skin out it would be the size of a twin bed!

3. The functions of the skin
Protects Body from…
Injury Infection Water loss
Regulates your Temperature
Eliminates Waste
Produces Vitamin D
Gathers Information

4. Protecting the body
The skin protects the body from disease-causing microorganism from entering the body.
It also keeps important things in like water.
“think of plastic wrap”

5. Regulates your temperature
Skin helps to maintain a normal body temperature. Blood vessels run through the skin producing warm blood, we also sweat through our skin to release heat if we are too hot.

6. Eliminates waste
Perspiration contains dissolved waste that is released through the skin.

7. Gathering information
The nerves that are located in your skin warn your body of dangers.
If you pinch yourself the skin sends receptors to your brain to have you feel pain. This is to make sure that you don’t hurt yourself even more.

8. Produces Vitamin D
Some skin cells produce vitamin D in the presence of sunlight.
Vitamin D is important for healthy bones.

9. Layers of the skin

10. Layers of the skin The skin is divided into two layers
1) Epidermis- outside layer of the skin. This is thinner than the dermis.
2) Dermis- is the inner layer of the skin. The dermis contains all the sweat glands, hairs, blood vessels, and oil glands

11. Parts of the skin (pg.490)

12. Melanin
Is a pigment or color substance, that gives skin its color. The more melanin in your skin the darker color it is.
Where do you think
More melanin would be in
People?

13. Caring for your skin
Healthy diet will help your skin by producing more skin cells and making your hair and nails healthier.
Keeping clean- helps with the oiliness. Take a shower!
Limit sun exposure- this will make you wrinkle faster. Also can cause cancer.