alleryStart learning →After contraction, how much blood normally remains in the ventricle?
A50 to 60 mL
B10 to 20 mL
C90 to 100 mL
DNone at all
Answer & Solution
Correct answer: A. 50 to 60 mL
1. Ventricular systole starts from an EDV of about 130 mL.
2. A stroke volume of 70 to 80 mL leaves 50 to 60 mL of blood in the ventricle after contraction.
3. That remainder is the end systolic volume, so the ventricle never empties completely.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 19 "The Cardiovascular System: The Heart", section 19.3 | Cardiac Cycle_
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