Everyday Science · Circulatory System (Human Biology) · page 7 of 9

Heart MCQs with Answers

Includes 15 past paper MCQs (marked).

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Heart MCQs (61–70)

10 MCQs with answers and a short one-liner. Hide answers to test yourself.

Past paper MCQs in this chapter · See all past papers

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61.
Approximately how many times each day do our heart valves open and close normally?
Correct Answer: C. 100,000
One-liner
Our heart valves open and close approximately 100,000 times each day under normal conditions.
62.
What are the main structural components of the heart?
Correct Answer: A. Chambers and valves
One-liner
The main structural components of the heart are chambers and valves.
63.
A baby's heartbeat starts ?
Correct Answer: B. Before he is born
One-liner
A baby's heartbeat starts before he is born, typically around the 5th to 6th week of pregnancy.
64.
Circulation of blood starts from the _?
Correct Answer: B. Right side of the heart
One-liner
Circulation of blood starts from the right side of the heart, which pumps deoxygenated blood to the lungs via the pulmonary artery.
65.
What separates the chambers of the heart?
Correct Answer: B. Valves
One-liner
The chambers of the heart are separated by valves, which ensure unidirectional blood flow and prevent backflow.
66.
What is the average weight of a male's heart?
Correct Answer: B. 340 gm
One-liner
The average weight of an adult male human heart is 340 grams.
67.
Past Paper MCQ
Which vessel is the main artery that leaves the left ventricle of the heart?
Correct Answer: B. Aorta
One-liner
The aorta is the main artery that carries oxygenated blood from the left ventricle to the rest of the body.
68.
The lower reading of blood pressure is called _?
Correct Answer: C. Diastolic
One-liner
The lower reading of blood pressure is called diastolic pressure.
69.
Which of the following belongs to blood circulatory system?
Correct Answer: A. Heart
One-liner
The Heart is the central pumping organ of the blood circulatory system.
70.
The true parts of heart are _?
Correct Answer: D. Both A and B
One-liner
The true parts of the heart are Both A and B (atria and ventricles), which are the upper and lower chambers responsible for receiving and pumping blood.

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Heart MCQs with Answers

Heart MCQs (61–70)

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