Which Statements Are Correct Regarding the Various Layers of the Heart

Multiple Choice

Which statements are correct regarding the various layers of the heart? Select all that apply.

A) The endocardium covers the entire heart and great vessels.
B) The endocardium is the muscular layer of the heart that contracts during each heartbeat.
C) The outermost layer of the heart is the epicardium.
D) The myocardium consists of myofibril cells.
E) The myocardium has four layers.