The chronotropic agents and the way by which they affect the heart rate. Concept introduction: The cardiovascular system of the body includes the heart and blood vessels. The cardiac cycle is defined as the repeated synchronized series of phases, in which heart muscles contract and relax for the generation of a heartbeat, followed by the next heartbeat.

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Chapter 19.9, Problem 38LO

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To define: The chronotropic agents and the way by which they affect the heart rate.

Concept introduction: The cardiovascular system of the body includes the heart and blood vessels. The cardiac cycle is defined as the repeated synchronized series of phases, in which heart muscles contract and relax for the generation of a heartbeat, followed by the next heartbeat.

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