THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -The endocardium is a thin, smooth tissue that makes up the lining of the chambers and valves of the heart. The innermost layer of the heart’s walls, it serves as a barrier between cardiac muscles and the bloodstream and contains necessary blood vessels.

Detailed explanation-2: -Your pericardium is a protective, fluid-filled sac that surrounds your heart and helps it function properly. Your pericardium also covers the roots of your major blood vessels as they extend from your heart. These are known as your “great vessels, ‘’ and they include your: Aorta.

Detailed explanation-3: -The coronary vessel structures are composed of an inner single layer of endothelial cells, surrounded by mural cells including smooth muscle cells and an outermost adventitia layer containing fibroblasts and other cell types (Passman et al.