1.what does each of the part represent in the respiratory system?
In the respiratory system:
1. **Nose and Mouth:** Act as entry points for air, helping filter and humidify it.
2. **Trachea (Windpipe):** Transports air from the nose and mouth to the lungs.
3. **Bronchi:** Branches of the trachea that lead air into the lungs.
4. **Lungs:** Organs where gas exchange occurs. Oxygen is taken in, and carbon dioxide is expelled.
5. **Bronchioles:** Smaller airways within the lungs that further distribute air.
6. **Alveoli:** Tiny air sacs within the lungs where oxygen and carbon dioxide exchange takes place.
7. **Diaphragm:** Muscle beneath the lungs that contracts and relaxes, aiding in breathing.
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Science