ANAT 103 Lecture Notes - Lecture 20: Left Coronary Artery, Superior Vena Cava, Right Coronary Artery
Document Summary
Located in the mediastinum in the thoracic cavity. Anterior and posterior is the sternum and vertebral bodies. Base of the heart is the broader part (top) where the vessels come out. Apex is the bottom, narrow part (toward left) 4 dense connective tissue rings surrounding the valves of the heart. Point of insertion for cardiac muscle bundle. Encloses the heart and holds it in place. Two main parts: separated by serous cavity (fluid filled space) Deep layer: secretes serous fluid for friction reduction. Visceral layer/ epicardium is clinging to the heart. Parietal layer (outer) is farther away and separated by the serous cavity. Between the visceral and parietal layer and within the serous cavity. Wall of heart layers: epicardium (external, visceral layer of serous pericardium, contains blood vessels on other side (deep) that supply the myocardium and connective tissue (fat, myocardium (middle, the cardiac muscle part of the heart. Rough pectinate muscle inside the anterior wall.
