Health, 05.11.2019 19:31, goodperson21

In the coronary circuit, the myocardium performs the coordinated contractions that pump blood out of the ventricles. these contractions are the
a. coronary arteries.
b. heart rate.
c. heartbeat.
d. aorta.

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In the coronary circuit, the myocardium performs the coordinated contractions that pump blood out of...