Question

3. Which of the following statements best describes how oxygen enters the lungs? (1 point)
Oxygen enters the lungs through the trachea, which branches into two tubes called the bronchi, which lead to the lungs.
Oxygen enters the lungs through the diaphragm, which branches into two tubes called the trachea
Oxygen enters the lungs through bronchi, which branches into two tubes called the bronchioles.
Oxygen enters the lungs through the trachea, which branches into the alveoli.

Answer 1

Answer:

Oxygen enters the lungs through the trachea, which branches into two tubes called the bronchi, which lead to the lungs.

Answer 2

Respiratory System Functions

1. C. Respiratory System

2. Diaphragm

3. A. Oxygen enters the lungs through the trachea, which branches into two tubes called the bronchi, which lead to the lungs.

4. C. Alveoli

5. Hemoglobin

6. D. Mucus found in the bronchial tubes collects dirt and germs that gets into your lungs. Tiny hairs called cilia work to sweep out the debris collected to keep your lungs clean.

7. C. Chronic Bronchitis

8. A. Emphysema

9. D. Carcinogens

10. D. People who quit smoking cannot reverse any of the damage that has been done to their lungs over an extended period of time.

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