The Fibrous Sac That Encloses the Heart is the ________

Question

The fibrous sac that encloses the heart is the ________.
A)epicardium
B)myocardium
C)endocardium
D)pericardium
E)ectocardium

Accepted Answer

The fibrous sac that encloses the heart is called the pericardium. Option A, epicardium, is the outermost layer of the heart itself. Option B, myocardium, refers to the muscle layer of the heart. Option C, endocardium, is the innermost layer of the heart that lines the chambers and valves. Option E, ectocardium, is not a known term in cardiac anatomy.