| A | B |
|---|
| Function of the Respiratory System | to carry out gas exchange. It supplies oxygen and removes carbon dioxide |
| Where does air enter the body | nose and mouth |
| Is the nose or mouth healthier to inhale? | Nose because of nose hair (cilia) and mucus |
| Pharynx | throat |
| Trachea | Windpipe - rings of cartilage keep trachea open |
| Epiglottis | flap that closes off the trachea so food cannot enter the lungs |
| Larynx | The voice box |
| Bronchi | 2 short tubes that carries air from the windpipe to the lungs |
| Alveoli | tiny sacs at the end of the bronchioles, gases are exchanged |
| diaphragm | dome-shaped muscle at the bottom of your chest cavity |
| Purpose of the diaphragm | movement forces air in and out of your lungs |
| Diaphragm goes down | Inhalation (ribs move out) |
| Diaphragm goes up | Exhalation (ribs move in) |
| Inhale | breathe IN |
| exhale | breathe OUT |
