Questions: The volume of blood ejected from the ventricles during a contraction is called the cardiac reserve. end-disastolic volume. cardiac output. stroke volume. end-systolic volume.

The volume of blood ejected from the ventricles during a contraction is called the
cardiac reserve.
end-disastolic volume.
cardiac output.
stroke volume.
end-systolic volume.

Transcript text: The volume of blood ejected from the ventricles during a contraction is called the cardiac reserve. end-disastolic volume. cardiac output. stroke volume. end-systolic volume.

Solution

The answer is: stroke volume.

Explanation for each option:

Cardiac reserve: This refers to the difference between the rate at which the heart pumps blood at any given time and its maximum capacity for pumping blood. It is not the volume of blood ejected during a single contraction.
End-diastolic volume: This is the volume of blood in the ventricles at the end of diastole, just before the heart contracts. It is not the volume ejected during contraction.
Cardiac output: This is the total volume of blood the heart pumps per minute, calculated as stroke volume multiplied by heart rate. It is not the volume ejected during a single contraction.
Stroke volume: This is the volume of blood ejected from the ventricles during a single contraction. Therefore, this is the correct answer.
End-systolic volume: This is the volume of blood remaining in the ventricles after contraction. It is not the volume ejected during contraction.