28 Oct 2021
Problem 21
Page 1172
Section 40.3: Critical Thinking Questions
Chapter 40: The Circulatory System
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28 Oct 2021
Background and context
The cardiac cycle can be defined as the sequence of muscular contraction and relaxation events during a complete heartbeat, which is regulated by electrical signals. It contains two principal events, the contraction of the cardiac muscle is called systole, and the relaxation event is regarded as diastole.
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