What is the diaphragm's main function?

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Respiratory System Questions Questions

Question 1 of 5

What is the diaphragm's main function?

A. pump blood into the lungs B. pull oxygen into the lungs and to pump carbon dioxide out C. pull carbon dioxide into the lungs and to pump oxygen out D. support lung structure

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 2 of 5

What is the function of the exchange part of the respiratory system?

A. Humidify the air B. Clear foreign particles C. Diffusion of O₂ and CO₂ D. Bring air to body temperature

Correct Answer: C

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 3 of 5

During inspiration, which of the following occurs?

A. The intra-pulmonary pressure decreases B. The diaphragm relaxes C. The volume of the thoracic cavity decreases D. The external intercostal muscles contract

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 4 of 5

What is the total volume of air a person can expire after a normal inspiration called?

A. Inspiratory Reserve Volume (IRV) B. Expiratory Reserve Volume (ERV) C. Inspiratory Capacity (IC) D. Expiratory Capacity (EC)

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 5 of 5

How much of the total carbon dioxide (CO₂) produced is transported in the blood as bicarbonate?

A. 20-25% B. 50-60% C. 70-80% D. 90-95%

Correct Answer: C

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

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