| Term | Definition |
|---|---|
| The Integumentary System | A collection of organs working together to help your body maintain a healthy internal environment (skin, hair, nails) |
| What does your skin do? | 1. protects 2. keeps you "in touch" 3. temperature regulation 4. removes waste |
| How does your skin protect? | It keeps foreign particles out. |
| How does your skin keep you "in touch"? | Nerve endings in your skin allow you to feel what's around you. |
| How does your skin regulate temperature? | Sweat glands produce sweat- which cools you down when it evaporates. |
| How does your skin remove waste? | Several chemicals from the bloodstream are waste. They are removed through sweat. |
| What gives your skin color? | Melanin |
| Melanin | A darkening chemical in the skin. |
| More melanin = Less melanin = |
More melanin = darker skin Less melanin = lighter skin |
| Name the 2 layers of the skin. | 1. Epidermis 2. Dermis |
| Epidermis | The upper, thinnest layer of epithelial tissue. Cells are dead and it is made up of keratin, which makes skin tough. |
| Dermis | The lower, thicker layer of connective tissue. |
| What does the Dermis contain? | blood vessels, nerves, muscle fibers, hair follicles, oil glands, seat glands and collagen |
| Collagen | It provides strength and flexibility |
| Where is hair produced? | At the hair follicle |
| Melanin | Gives hair its color |
