Chapter 19.7, Problem 28LO

Summary Introduction

To summarize: The mechanical events of muscle contraction.

Concept introduction: Circulatory system refers to the cardiovascular system of the body. This system includes heart and the blood vessels. The cardiac cycle is defined as the repeated synchronized series of phases, in which muscles contract and relax for the generation of a heartbeat, followed by the next heartbeat. The association of the organized cardiac muscle cells, which are specialized in their functioning, is called cardiac conduction system.