Question

What is the volume of blood per heart beat pumped out by one ventricle

A) end systolic volume (ESV)
B) stroke volume (SV)
C) heart rate (HR) D) venous return (VR)
E) cardiac output (CO)
F) end diastolic volume (EDV)

Answer 1

The volume of blood per heartbeat ejected by one ventricle is known as the stroke volume (SV), typically 70-80 mL, which along with the heart rate (HR), is used to calculate the cardiac output (CO).

Step-by-step explanation:

The volume of blood per heart beat pumped out by one ventricle is called the stroke volume (SV). Stroke volume is normally in the range of 70-80 mL. It is defined as the amount of blood ejected by a ventricle during one contraction. Ventricular systole begins with the end diastolic volume (EDV), which is the volume of blood within the ventricle at the end of atrial systole and is roughly 130 mL. After contraction, the amount of blood left in the ventricle is the end systolic volume (ESV), which is approximately 50-60 mL. Stroke volume, along with heart rate (HR), is also used to calculate cardiac output (CO), which is the volume of blood pumped by the heart in one minute.