Answered

The myocardium is the

A. smooth lining of ventricles.
B. inner lining of atria and ventricles.
C. delicate lining of the atria.
D. muscular wall making up the bulk of the heart.



Answer :

GinnyAnswer

Final answer:

The myocardium is the thick layer of the heart that pumps blood efficiently.


Explanation:

The myocardium is the middle and thickest layer of the heart wall, consisting of cardiac muscle cells surrounded by collagen. It is responsible for pumping blood through the heart and into the major arteries. The myocardium's intricate muscle pattern allows for effective blood circulation.


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