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respiratory system
functions of the organs in the respiratory system
| Term | Definition |
|---|---|
| Nasal cavity | Air is filtered and warmed. Dust and pathogens are removed from the air. |
| Pharnyx | Air is filtered and warmed |
| Larnyx | This is the voice box. Vocal cords vibrate as air passes over them to produce sound. |
| epiglottis | The flap of tissue that closes when you swallow food to prevent choking. |
| Trachea | The tube with cartilage rings that give support and protection. Air travels to the lungs through this tube. |
| Cilia | Tiny hairs that line the trachea and bronchi. These filter air as it passes to the lungs |
| Bronchi/bronchioles | Carry warm , and filter air on the way to the lungs. These become inflamed during an asthma attack. |
| Lungs | Holds air, contain alveoli |
| Alveoli | Site of gas exchange. Oxygen diffuse into the lungs and carbon dioxide diffuses out of the blood and into the lungs to be released. |
| Diaphragm | Changes air pressure in the chest cavity to allow air to enter and leave the lungs. |