Circulatory System and Heart - Problem Set
Q. What is the function of capillaries in the circulatory system?
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A.
To transport blood to the heart
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B.
To exchange nutrients and waste
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C.
To store blood
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D.
To regulate blood pressure
Solution
Capillaries are small blood vessels that facilitate the exchange of nutrients and waste between blood and tissues.
Correct Answer: B — To exchange nutrients and waste
Q. Which component of blood is primarily responsible for oxygen transport?
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A.
Plasma
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B.
White blood cells
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C.
Platelets
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D.
Red blood cells
Solution
Red blood cells are primarily responsible for transporting oxygen throughout the body.
Correct Answer: D — Red blood cells
Q. Which of the following is a common heart condition characterized by irregular heartbeat?
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A.
Hypertension
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B.
Arrhythmia
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C.
Atherosclerosis
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D.
Angina
Solution
Arrhythmia is a common heart condition characterized by an irregular heartbeat.
Correct Answer: B — Arrhythmia
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