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CCM Human Breathing
Stucture and Function
| Term | Definition |
|---|---|
| Nostrils | Two openings in the nose through which air is inhaled |
| Nose | Filters and humidifies air |
| Epiglottis | Flap of tissue that prevents food from passing into the trachea |
| Larynx | The voice box- responsible for producing sound |
| Trachea | The windpipe |
| C-shape rings of cartilage | Structures that help to keep the trachea and bronchi from closing in when air is drawn through them |
| Bronchi | The two subdivisions of the trachea |
| Bronchioles | Tiny branches of the bronchi |
| Mucus | Present in the trachea and, bronchi and bronchioles to trap small unwanted particles |
| Cilia | Tiny hairs present in the trachea, bronchi and bronchioles to move mucus and unwanted particles from the breathing system to the stomach |
| Lungs | Large, pink, spongy structures in which gaseous exchange takes place |
| Alveoli | These tiny air sacs form the end of each bronchiole. |