LooseLeaf for Human Anatomy
LooseLeaf for Human Anatomy
5th Edition
ISBN: 9781259285271
Author: Michael McKinley Dr., Valerie O'Loughlin, Elizabeth Pennefather-O'Brien
Publisher: McGraw-Hill Education
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Chapter 23, Problem 3WYL

Explain how valves and muscular pumps help veins propel blood back to the heart.

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Explain how the heart valves keep blood flowing in one direction.
Explain how valves and muscular pumps help veins propelblood back to the heart.
Explain in details contraction of the heart on cellular level by describing the contraction of an individual muscle fiber.
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The Cardiovascular System: An Overview; Author: Strong Medicine;https://www.youtube.com/watch?v=Wu18mpI_62s;License: Standard youtube license