Respiratory

1. covers outer surface of the lungs and lines inner surface of the thoracic cavity
3. nose bleed
6. muscle that separates the thoracic cavity from the abdomen makes breathing possible
7. taking in air diaphragm contracts
9. provide mucus, makes bones of the skull lighter
13. 2 large tubes that branch out form the trachea that gets air into the lungs
14. specializes in the ears nose and throat

2. air sacs where oxygen and carbon dioxide exchange occur
3. closes off the trachea during swallowing
4. "the throat" air to and from the nose to the trachea
5. "the voice box" contains vocal cords, makes speech possible
8. bring oxygen into the body and remove carbon dioxide
10. breathing out diaphragm relaxes
11. "windpipe" C shaped cartilage that compresses so food can pass down the trachea
12. bronchial tube, bronchus