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High School Biology: The Circulatory, Respiratory, Digestive, and Excretory Systems - The Respiratory System (Fill in the blank)
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High School Biology: The Circulatory, Respiratory, Digestive, and Excretory Systems - The Respiratory System (Fill in the blank)
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8 Questions

1. The exchange of gases between the body and the outside air is called ____________.

2. ____________ enters the respiratory system through the nose.

3. When the diaphragm contracts, the ____________ expands.

4. Pulmonary gas exchange occurs in the ____________ of the lungs.

5. Emphysema is usually caused by ____________ and is irreversible.

6. From the pharynx, air next passes through the ____________.

7. Pulmonary gas exchange is the exchange of gases between inhaled air and the ____________.

8. Tiny hairs called ____________ line the bronchi.

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