The resistance the ventricles must overcome to push blood into circulation is:Question 6Select one:a.Preloadb.End Systolic Volumec.Afterloadd.End Diastolic Volume
Question
The resistance the ventricles must overcome to push blood into circulation is:Question 6Select one:a.Preloadb.End Systolic Volumec.Afterloadd.End Diastolic Volume
Solution
To determine the resistance the ventricles must overcome to push blood into circulation, we need to understand the different options provided in the question.
a. Preload: Preload refers to the amount of blood that fills the ventricles during diastole, or the relaxation phase of the cardiac cycle. It represents the initial stretching of the ventricles before they contract to pump blood. Preload is not directly related to the resistance the ventricles must overcome.
b. End Systolic Volume: End Systolic Volume (ESV) is the volume of blood remaining in the ventricles after contraction, or systole. It is not directly related to the resistance the ventricles must overcome.
c. Afterload: Afterload is the resistance that the ventricles must overcome to eject blood into the circulation. It is determined by the pressure in the arteries that the ventricles must push against to pump blood out of the heart. Afterload is the correct answer in this case.
d. End Diastolic Volume: End Diastolic Volume (EDV) is the volume of blood in the ventricles at the end of diastole, or the relaxation phase. It is not directly related to the resistance the ventricles must overcome.
Therefore, the correct answer to the question is c. Afterload.
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