| A | B |
|---|
| Name the outer flap of the ear. | pinna |
| Name the tube that leads from the outside to the eardrum. | auditory canal |
| What protects the lining of the auditory canal and prevents debris from reaching the eardrum? | wax |
| Name the thin, layer of skin that vibrates when struck by air vibrations. | eardrum |
| Name the three bones of the middle ear. | hammer, anvil, and stirrup |
| How do the hammer, anvil, and stirrup bones treat loud sounds? | They soften loud sounds. |
| How do the hammer, anvil, and stirrup bones treat soft sounds? | They magnify soft sounds. |
| Name the tube that keeps air pressure equalized on both sides of the eardrum. | eustachian tube |
| Name the thin layer of skin connected to the stirrup bone. | oval window |
| Name the fluid-filled tube of the inner ear. | cochlea |
| When the fluid in the cochlea vibrates, it makes cilia send electrical signals down the _________ to the brain. | auditory nerve |
| What are the tubes in the inner ear that sense our body position and balance? | semicircular canals |
| Identify the outer layer of dead skin cells. | epidermis |
| What are the yellow, brown or black grains found in the epidermis? | melanin |
| What gives skin and hair their color? | melanin |
| What is the living layer of the skin called? | dermis |
| Where does the skin produce sweat? | sweat glands |
| When does the skin open its sweat glands? | The sweat glands are always open. |
| How does the skin's blood circulation change when you are hot? | It increases circulation. |
| How does the skin's blood circulation change when you are cold? | It reduces circulation. |
| Name the four sensations involved with our sense of touch. | hot, cold, pressure and pain |
