MCQ on Cardiac Output, Stroke Volume and Heart Rate

MCQ on Cardiac Output, Stroke Volume and Heart Rate

Frequently Asked MCQ quiz on the Cardiac Output, Stroke Volume and Heart Rate Questions with Answers – MCQ Quiz for Competitive Exam Preparation – These questions given will be useful for competitive exams preparation. We will be updating more mcq regularly, please follow our website regularly.

What is cardiac output?

a) The volume of blood ejected by the heart in one minute

b) The rate at which the heart beats

c) The amount of blood pumped out by each ventricle in one heartbeat

d) The pressure generated by the heart during systole

Answer: a) The volume of blood ejected by the heart in one minute

What is stroke volume?

a) The volume of blood ejected by the heart in one minute

b) The rate at which the heart beats

c) The amount of blood pumped out by each ventricle in one heartbeat

d) The pressure generated by the heart during systole

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Answer: c) The amount of blood pumped out by each ventricle in one heartbeat

What is heart rate?

a) The volume of blood ejected by the heart in one minute

b) The rate at which the heart beats

c) The amount of blood pumped out by each ventricle in one heartbeat

d) The pressure generated by the heart during systole

Answer: b) The rate at which the heart beats

What is the formula for calculating cardiac output?

a) Stroke volume × Heart rate

b) Heart rate ÷ Stroke volume

c) Heart rate + Stroke volume

d) Stroke volume – Heart rate

Answer: a) Stroke volume × Heart rate

Which of the following factors can increase stroke volume?

a) Increased heart rate

b) Decreased contractility

c) Decreased blood volume

d) Increased venous return

Answer: d) Increased venous return

Which of the following factors can increase heart rate?

a) Parasympathetic stimulation

b) Hypothermia

c) High blood pressure

d) Sympathetic stimulation

Answer: d) Sympathetic stimulation

Which of the following statements about cardiac output is true?

a) Cardiac output is inversely proportional to heart rate.

b) Cardiac output is directly proportional to stroke volume.

c) Cardiac output is not affected by venous return.

d) Cardiac output remains constant during exercise.

Answer: b) Cardiac output is directly proportional to stroke volume.

Which of the following statements about stroke volume is true?

a) Stroke volume is the product of heart rate and cardiac output.

b) Stroke volume is the difference between end-diastolic volume and end-systolic volume.

c) Stroke volume increases with sympathetic stimulation.

d) Stroke volume decreases with increased afterload.

Answer: b) Stroke volume is the difference between end-diastolic volume and end-systolic volume.

Which of the following factors can decrease stroke volume?

a) Increased preload

b) Decreased contractility

c) Decreased afterload

d) Increased sympathetic stimulation

Answer: b) Decreased contractility

Which of the following best describes heart rate?

a) The amount of blood ejected by the heart in one minute

b) The rate at which the heart beats

c) The amount of blood pumped out by each ventricle in one heartbeat

d) The pressure generated by the heart during systole

Answer: b) The rate at which the heart beats

Which of the following is NOT a factor affecting stroke volume?

a) Preload

b) Afterload

c) Contractility

d) Heart rate

Answer: d) Heart rate

What effect does increased preload have on stroke volume?

a) Decreases stroke volume

b) Increases stroke volume

c) Has no effect on stroke volume

d) Reduces heart rate

Answer: b) Increases stroke volume

Which of the following statements about cardiac output is correct?

a) Cardiac output equals stroke volume minus heart rate.

b) Cardiac output is the product of stroke volume and heart rate.

c) Cardiac output decreases with increased afterload.

d) Cardiac output is unaffected by changes in blood volume.

Answer: b) Cardiac output is the product of stroke volume and heart rate.

Which of the following will increase heart rate?

a) Parasympathetic stimulation

b) Hypothermia

c) Beta-blocker medication

d) Decreased sympathetic activity

Answer: d) Decreased sympathetic activity

Which of the following factors can decrease cardiac output?

a) Increased preload

b) Decreased afterload

c) Increased contractility

d) Decreased heart rate

Answer: d) Decreased heart rate

What is the effect of increased afterload on stroke volume?

a) Increases stroke volume

b) Decreases stroke volume

c) Has no effect on stroke volume

d) Increases heart rate

Answer: b) Decreases stroke volume

What effect does increased sympathetic stimulation have on stroke volume?

a) Increases stroke volume

b) Decreases stroke volume

c) No effect on stroke volume

d) Increases heart rate

Answer: a) Increases stroke volume

Which of the following conditions is likely to result in an increased cardiac output?

a) Severe hemorrhage

b) Heart failure

c) Hypovolemia

d) Increased sympathetic stimulation

Answer: d) Increased sympathetic stimulation

Which of the following best describes stroke volume?

a) The amount of blood ejected by the heart in one minute

b) The rate at which the heart beats

c) The amount of blood pumped out by each ventricle in one heartbeat

d) The pressure generated by the heart during systole

Answer: c) The amount of blood pumped out by each ventricle in one heartbeat

Which factor directly affects end-diastolic volume (preload)?

a) Contractility

b) Afterload

c) Venous return

d) Heart rate

Answer: c) Venous return

What effect does increased contractility have on stroke volume?

a) Decreases stroke volume

b) Increases stroke volume

c) No effect on stroke volume

d) Increases heart rate

Answer: b) Increases stroke volume

Which of the following best defines afterload?

a) The amount of blood ejected by the heart in one minute

b) The pressure that must be exceeded before blood is ejected from the ventricles

c) The rate at which the heart beats

d) The volume of blood pumped out by each ventricle in one heartbeat

Answer: b) The pressure that must be exceeded before blood is ejected from the ventricles

What is the primary determinant of stroke volume?

a) Heart rate

b) Afterload

c) Preload

d) Contractility

Answer: c) Preload

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