The innermost layer of the heart, the _______, consists of a smooth endothelial lining resting upon connective tissue.
A) pericardium
B) myocardium
C) parietal pericardium
D) endocardium

Question

Quizplus · Accepted Answer

The innermost layer of the heart, which is in contact with the blood, is called the endocardium. It is made up of a smooth endothelial lining resting upon connective tissue. The pericardium is the tough, fibrous sac that surrounds and protects the heart. The myocardium is the thick, muscular middle layer of the heart. The parietal pericardium is the outer layer of the pericardium, which lines the inside of the fibrous sac.

The Innermost Layer of the Heart, the _______, Consists of a Smooth