The volume of blood expelled by the left ventricle in one minute is described as which term?

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Multiple Choice

The volume of blood expelled by the left ventricle in one minute is described as which term?

Cardiac output is the amount of blood the heart pumps each minute. It describes the volume expelled by the ventricle into the circulation over a 60-second period, and is calculated as heart rate multiplied by stroke volume (CO = HR × SV). This directly matches the idea of a volume of blood leaving the left ventricle per minute. Preload refers to the initial stretch of the ventricular muscle from venous return before contraction, not the volume pumped per minute. Afterload is the pressure or resistance the ventricle must overcome to eject blood. Blood pressure is the pressure within the arteries, not a measure of how much blood is pumped per minute.

Cardiac output is the amount of blood the heart pumps each minute. It describes the volume expelled by the ventricle into the circulation over a 60-second period, and is calculated as heart rate multiplied by stroke volume (CO = HR × SV). This directly matches the idea of a volume of blood leaving the left ventricle per minute.

Preload refers to the initial stretch of the ventricular muscle from venous return before contraction, not the volume pumped per minute. Afterload is the pressure or resistance the ventricle must overcome to eject blood. Blood pressure is the pressure within the arteries, not a measure of how much blood is pumped per minute.

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