Heart Physiology
   

This example provides us with the opportunity to share some physiological data on the heart
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Figure 1
Figure 1:  Traces of left ventricular systolic  pressure and heart rate from rat myocardium in situ:    A) control  B) dopamine stimulated  C) post dopamine stimulated  D) left anterior descending (LAD) ligated heart.  
During dopamine stimulation, the heart increases both its oxygen consumption and work output.