The difference between the end diastolic volume and the end systolic volume is known as what?

Prepare for the NBEO General Physiology Exam. Study with detailed flashcards and multiple choice questions, each with explanations. Ensure success on your exam!

The difference between the end diastolic volume (EDV) and the end systolic volume (ESV) is known as stroke volume. Stroke volume is a crucial measure as it represents the volume of blood ejected by the heart with each contraction.

End diastolic volume is the total amount of blood in the ventricle just before contraction, while end systolic volume is the amount of blood remaining in the ventricle after it has contracted. Therefore, stroke volume quantifies the effectiveness of the heart in pumping blood; it indicates how much blood is being moved into the circulation with each heartbeat.

This understanding is fundamental in physiology as it helps in evaluating cardiac function and can be influenced by several factors, including preload, afterload, and contractility. The other choices refer to different concepts within cardiovascular physiology, making stroke volume the correct answer in this context.

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