1. Yet another way that pollutants can get in our bodies Absorption through the skin

2. Skin Skin is the first line of defense against a hostile world. Skin... Keeps pathogens and infections out. Keeps the body at the right temperature. Keeps the proper amount of moisture inside.

3. Skin Skin has three main layers: 1.epidermis (epi means above) 2.dermis 3.subcutaneous layer (fatty tissue)

4. Skin

5. Epidermis The top layer that you can see. Has a top layer of dead cells and they often fall off. Has a bottom layer of growing cells.

6. Dermis The middle layer. It contains: many tiny blood cells (capillaries). many nerve endings for feeling. hair follicles sweat glands

7. Subcutaneous Layer The layer of fat cells all around us to protect and insulate us from the cold. Sometimes it is called the hypodermis.

8. Absorption The skin tries to keep things out, but some things make it through. Skin can absorb some: oils and tars alcohols cleaning products pesticides medicines

9. Absorption Once contaminants get through your skin, they will get into your bloodstream. The contaminants are spread throughout the body through all the blood vessels.

10. Examples of contaminants absorbed by skin Chlorine in swimming pools or in shower (can cause skin irritation; link to cancer?)