Cardiac Cycle Overview
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Questions and Answers

CO = (72 beats per ______) x (0.07 liters per beat)

minute

Dr. Nguyen pointed out that ______ volume is most often represented in milliliters, while cardiac output is most often represented in liters.

stroke

______ output is the same for both the right and left sides of the heart, even though they are involved in different circuits, because blood flows between the circuits in series.

Cardiac

Even as little as 1% ______ could have a profound negative impact on the body by causing a backup in either the pulmonary or systemic circuit.

<p>mismatch</p> Signup and view all the answers

This would increase the ______ throughout your pulmonary circulation, and you would eventually die because your lungs would "drown" from the inside due to pulmonary edema.

<p>pressures</p> Signup and view all the answers

During isovolumetric relaxation, the semilunar valves close and the volume of blood in the ventricles is not changing, representing a stage of ______.

<p>diastolic pressure</p> Signup and view all the answers

If the ventricles were to stop contracting, blood flow would stop, and you would die due to the absence of ______ pressure.

<p>systolic pressure</p> Signup and view all the answers

The ventricles re-fill during ventricular filling to maintain adequate ______ volume for proper circulation.

<p>stroke volume</p> Signup and view all the answers

A measure of 40 mm Hg in ventricular pressure could really be an absolute pressure of 800 mm Hg, indicating the importance of understanding ______ volume.

<p>ejection fraction</p> Signup and view all the answers

Atrial pressure changes modestly compared to ventricular pressure throughout the cardiac cycle, emphasizing the significance of monitoring ventricular ______.

<p>volumes</p> Signup and view all the answers

Mean arterial pressure (MAP) is the weighted ______ pressure occurring in the aorta during a cardiac cycle.

<p>average</p> Signup and view all the answers

The difference in end-diastolic volume (EDV) and end-systolic volume (ESV) represents the ______ of blood ejected from the heart during one cardiac cycle.

<p>volume</p> Signup and view all the answers

Ejection Fraction (EF) = ______ Volume/End-Diastolic Volume

<p>Stroke</p> Signup and view all the answers

More time is spent ______ than contracting in the cardiac cycle.

<p>relaxing</p> Signup and view all the answers

The ______ pressure is given more weight than the systolic pressure in the calculation of mean arterial pressure.

<p>diastolic</p> Signup and view all the answers

The ______ is the maximum pressure in the aorta during the cardiac cycle.

<p>systolic pressure</p> Signup and view all the answers

The ______ is the lowest blood pressure in the aorta during the cardiac cycle.

<p>diastolic pressure</p> Signup and view all the answers

The closure of the AV valves marks the beginning of ______ contraction.

<p>ventricular</p> Signup and view all the answers

The ______ peaks at the point where the heart has emptied its blood.

<p>ventricular pressure</p> Signup and view all the answers

The ______ opens when the ventricular pressure is greater than the aortic pressure.

<p>aortic valve</p> Signup and view all the answers

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