| A | B |
|---|
| Nasal Cavity | conditions the incoming air |
| Oral Cavity | takes in food, vocalizations emerge, and good for breath |
| Pharynx | passage to the stomach and lungs |
| Epiglottis | covers the glottis during swallowing and prevents the entrance of food and drink into the larynx |
| Larynx | two ligaments that vibrate to produce sound |
| Trachea | a passage for conveying air to and from the lungs |
| Bronchi | leads air to the tiny sacs called aveoli |
| Diaphragm | helps pump the CO2 out of the lungs and pulls the O2 into the lungs. Also, as the diaphragm contracts and relaxes, breathing takes place |
| cilia | short, hairlike, rythmically beating organelles on the surface of certain cells; eyelashes |
| capillaries | tiniest blood vessel that connects arteries and veins |
| Boyle's Law | principle for relatively low pressure of an ideal gas kept at constant temperature varies inversely with the volume of the gas |
| oxygen | a colorless, gaseous element constituting about one fifth of the volume of the atmosphere and present in a combined state in nature |
