Final answer:
The amount of blood pumped by either ventricle per minute is known as cardiac output, calculated as heart rate multiplied by stroke volume.
Step-by-step explanation:
The amount of blood that is pumped out by either ventricle per minute is called cardiac output (CO). Cardiac output is a crucial measurement and can be calculated by multiplying the heart rate (HR), which is how many times the heart beats per minute, by the stroke volume (SV), the amount of blood pumped by each ventricle per beat. It provides an indication of the heart's efficiency at circulating blood throughout the body.
Cardiac output is typically measured in liters per minute, and various factors can influence it, such as sympathetic stimulation and catecholamines like epinephrine and norepinephrine, which can increase CO by increasing both HR and SV. On the other hand, factors like parasympathetic stimulation and altered potassium or calcium ion levels can decrease CO.