| A | B |
|---|
| air sacs | thin-walled chambers in the lung through which oxygen moves into the blood |
| breathing rate | the number of times a person inhales each minute |
| bronchial tubes | tubes that carry air from the trachea to the lungs |
| carbon dioxide | the gaseous waste product produced after cells convert food into energy |
| diaphragm | the dome-shaped muscle that separates the chest from the stomach area |
| larynx | the part of the throat that is used in speaking |
| lungs | two spongy organs that expand when filled with air |
| oxygen | the gas needed by your cells to convert food into energy |
| respiratory system | the body parts that work together to take air into the body and push it back out |
| trachea | the air tube that joins the throat to the lungs |
| vocal chords | bands of tissue in the larynx that produce sounds when vibrated |
