Summary

This document appears to be a chapter from a textbook or study guide covering the human heart and circulatory system. It introduces concepts about cardiac function and blood pressure, using diagrams. The text includes practical information on the myocardium and discusses the role of the heart and circulatory systems.

Full Transcript

hemyocardiumreliesalmostexclusivelyonenergy inaerections released foldhigheroxidativecapacity haveathree tissues This iswhy myocardial thanskeletal muscle...

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