| A | B |
|---|
| Abdominal cavity | houses parts of the digestive, excretory, and reproductive systems- separated from the thoracic cavity by the diaphragm. |
| Alveoli | Terminal air sacs that constitute the gas exchange surface of the lungs. |
| Bronchi | Pair of breathing tubes that branch from the trachea into the lungs. |
| Diaphragm | A sheet of muscle active in ventilating the lungs |
| Intercostal muscle | Muscle located between the ribs. |
| Minute Volume | The volume of air breathed in one minute without conscious effort. |
| Residual Volume | The volume of air remaining in lungs after maximum exhalation |
| Spirometer | An instrument for measuring the air entering and leaving the lungs. |
| Thoracic cavity | body cavity that houses the lungs and heart |
| Tidal Volume | The volume of air breathed in and out without conscious effort. |
| Vital Capacity | The total volume of air that can be exhaled after maximal inhalation. |
