Free Practice Quiz Question List

1 Foundations of Hemodynamics Online Quiz Questions

Use this free practice quiz with 20 questions to review 1 Foundations of Hemodynamics, test your knowledge, and prepare for your next test or exam.

20 questions

True or false

1 point

In each circulation, blood flows from a region of higher pressure toward a region of lower pressure.

A
True
B
False

Choose one

1 point

Which statement correctly matches a ventricle to the circulation it pumps through?

A
The right ventricle pumps blood through the normally lower-pressure pulmonary circuit.
B
The right ventricle pumps blood through the higher-pressure systemic circuit.
C
The left ventricle pumps blood through the pulmonary circuit.
D
The left ventricle pumps blood through the normally lower-pressure pulmonary circuit.

Fill in the blank

1 point

The volume pumped by a ventricle per minute, calculated as heart rate multiplied by stroke volume, is .

Written response

1 point

A blood pressure is 126/78 mmHg. What is the pulse pressure?

Choose one

1 point

At a typical heart rate, estimate mean arterial pressure (MAP) for a blood pressure of 124/76 mmHg using $\mathrm{MAP} \approx \mathrm{DBP} + \frac{1}{3}(\mathrm{SBP} - \mathrm{DBP})$ .

A
88 mmHg
B
92 mmHg
C
100 mmHg
D
108 mmHg

True or false

1 point

A filling-pressure measurement always corresponds closely to ventricular volume and myocardial stretch, so it directly measures preload.

A
True
B
False

Choose all

1 point

Select all statements that accurately describe how vessel radius affects resistance and circulation.

A
Narrowing small arteries and arterioles increases resistance.
B
Widening small arteries and arterioles increases resistance.
C
Widening small arteries and arterioles decreases resistance.
D
Modest changes in vessel diameter can substantially alter flow and pressure.
E
Vessel radius has little effect on resistance.

Fill in the blank

1 point

Within the heart’s functional range, increased filling can stretch cardiac muscle fibers and increase stroke volume through the .

Written response

1 point

What term describes the strength of myocardial contraction at a given preload and afterload?

Choose one

1 point

Two people have the same MAP. One has relatively high cardiac output and lower systemic vascular resistance; the other has lower cardiac output and higher systemic vascular resistance. Which conclusion is supported?

A
The person with higher cardiac output must have higher MAP.
B
The person with lower cardiac output must have lower systemic vascular resistance.
C
The same MAP can occur with different combinations of cardiac output and systemic vascular resistance.
D
The two people must have identical tissue blood flow.

Choose all

1 point

Select all accurate statements about how preload and afterload can affect stroke volume.

A
Within the heart’s functional range, increased filling can increase stroke volume.
B
Afterload is defined only by a single arterial-pressure measurement.
C
Increased afterload can make ejection more difficult and reduce stroke volume, particularly in a weak ventricle.
D
Excessive filling always improves cardiac output.

Open ended

1 point

Explain why two people with the same MAP can have different cardiac outputs, and why MAP alone does not specify tissue blood flow.

Choose one

1 point

In a steady state, how do the volumes pumped by the right and left ventricles compare over time?

A
The right ventricle normally pumps much more blood per minute than the left ventricle.
B
The right and left ventricles pump approximately the same volume of blood over time.
C
The left ventricle normally pumps much less blood per minute than the right ventricle.
D
The two ventricles pump equal volumes only when their circuits have equal resistance.

Choose one

1 point

If the pressure difference across a vascular segment stays constant while its resistance increases, what happens to flow through that segment?

A
Flow decreases.
B
Flow increases.
C
Flow stays the same.
D
Flow becomes independent of the pressure difference.

Choose one

1 point

Within the heart’s functional range, what is the likely effect of increased ventricular filling on stroke volume?

A
Stroke volume must decrease because the ventricle is more filled.
B
Stroke volume can increase because increased filling stretches cardiac muscle fibers.
C
Stroke volume cannot change unless heart rate also changes.
D
Increased filling always increases stroke volume without limit.

Choose one

1 point

If myocardial contractility increases while preload and afterload remain the same, what can happen to the volume ejected per beat?

A
Stroke volume must fall because contractility is unrelated to ejection.
B
Stroke volume can rise only if preload also rises.
C
The volume ejected per beat can increase.
D
Only the end-diastolic volume changes; ejected volume cannot change.

Written response

1 point

A person’s systolic blood pressure is $126$ mmHg and diastolic blood pressure is $78$ mmHg. What is the pulse pressure?

Choose one

1 point

A weak left ventricle faces an increase in afterload. Which effect is most likely?

A
Ejection becomes easier and stroke volume is likely to rise.
B
Ejection becomes more difficult and stroke volume may fall.
C
Afterload affects only venous return, so ejection is unchanged.
D
Stroke volume must remain unchanged because afterload does not affect the ventricle.

Written response

1 point

A person has a heart rate of $75$ beats/min and a stroke volume of $64$ mL/beat. What is the cardiac output in L/min?

True or false

1 point

True or false: If heart rate becomes very fast, cardiac output must increase because cardiac output equals heart rate multiplied by stroke volume.

A
True
B
False

1 Foundations of Hemodynamics Online Quiz Questions

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