Q. What is the normal range of respiratory rate for a healthy adult at rest?
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A.
5-10 breaths per minute
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B.
12-20 breaths per minute
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C.
20-30 breaths per minute
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D.
30-40 breaths per minute
Solution
The normal respiratory rate for a healthy adult at rest is typically between 12 and 20 breaths per minute.
Correct Answer:
B
— 12-20 breaths per minute
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Q. What is the primary mechanism of oxygen transport in the blood?
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A.
Dissolved in plasma
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B.
Bound to hemoglobin
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C.
As bicarbonate ions
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D.
In white blood cells
Solution
The primary mechanism of oxygen transport in the blood is through binding to hemoglobin in red blood cells.
Correct Answer:
B
— Bound to hemoglobin
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Q. Which structure is responsible for the gas exchange in the lungs?
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A.
Bronchi
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B.
Alveoli
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C.
Trachea
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D.
Larynx
Solution
The alveoli are the tiny air sacs in the lungs where gas exchange occurs.
Correct Answer:
B
— Alveoli
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