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A 35-year-old member asked:

What is the function of cardiac muscle?

2 doctor answers3 doctors weighed in
Dr. Calvin Weisberger
Cardiology 51 years experience
Myocardium: Its function is to rhythmically shorten and then relax so as to provide motive force to pump blood through the vascular system.
Dr. Frederick Tibayan
Thoracic Surgery 23 years experience
Pump blood: The heart muscle relaxes, and the chamber gets bigger and fills up with blood. The heart muscles squeezes and pumps blood out. (Valved in the heart make sure everything goes forward.)

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A 38-year-old member asked:

What are the functions of cardiac muscle fibers?

1 doctor answer2 doctors weighed in
Dr. Jay Rosenfeld
A Verified Doctoranswered
A US doctor answeredLearn more
See below: The heart is a muscle with very special qualities. The main bulk of heart muscle helps pump blood to the lungs to get oxygen and then pumps that oxygen rich blood to the rest of the body. Then there is a special type of cardiac fibers that helps conduct electrical impulses from two "pacemaker" sites in the heart, the sa and av nodes which allow the heart to keep pumping for your entire life.

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Last updated Dec 20, 2014
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