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Respiratory System
| Term | Definition |
|---|---|
| Breathing | what your body does when it takes in fresh air, containing oxygen, and lets out the used air. |
| Respiratory System | the body parts that work together to bring air into and push it out of your body. |
| Nose and Mouth | take in and let out air |
| Windpipe/Trachea | the air passage connecting the throat to the lungs |
| Lungs | two spongy bags that expand when they fill with air |
| Diaphragm | a dome-shaped muscle that separates the chest from the stomach area. When you inhale, the diaphragm tightens & moves down, further increasing the space inside the chest. When you exhale, the diaphragm relaxes & moves up, making less space inside the chest |
| Cartilage | tough but bendable material. cartilage makes your windpipe stiff, so your windpipe doesn't collapse when you breathe in |
| Inhale | when you breathe in and your lungs fill with air |
| Exhale | when you breathe out and air is forced out of your lungs |
| Breathing Rate | the number of times you inhale in one minute |
| Larynx | also known as the voice box, it is at the top of the windpipe, all the air you breathe passes through it |
| Vocal Cords | two elastic bands inside the larynx. To make high-pitched sounds, you tighten your vocal cords. Then they vibrate faster as air goes past. To make low-pitched sounds you relax your vocal cords. |
| Bronchial Tubes | when you inhale, air moves from the windpipe into the two bronchial tubes, one going to each lung. |
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