BIOLOGY
BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 48, Problem 1U

An ECG measures

a. changes in electrical potential during the cardiac cycle.

b. Ca2+ concentration of the ventricles in diastole.

c. the force of contraction of the atria during systole.

d. the volume of blood being pumped during the contraction cycle.

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The Cardiovascular System: An Overview; Author: Strong Medicine;https://www.youtube.com/watch?v=Wu18mpI_62s;License: Standard youtube license