HTHSCI 1H06 Lecture Notes - Lecture 1: Descending Aorta, Intercostal Space, Venous Blood
13 Jan 2018
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Document Summary
Structure of the pericardium and heart wall. Anatomy of chambers and valves of heart. Explain path of blood flow through heart. The heart is an organ that is connected to an entire vasculature. Purpose: deliver oxygen & nutrients to body tissues, remove co, heat & waste from tissues. Inferior surface of pericardium is fused with the diaphragm. Location: wrapped in the pericardium , found in the mediastinum. Orientation : rotated towards the left & a blunt shape. Purpose of pericardium: anchors heart to diaphragm when there is movement. Great vessels: superior and inferior vena cava. Superior vena cava returns blood from the top of the body to the right side of the heart. Inferior vena cava returns the deoxygenated blood from the lower half of the body. Arch of the aorta comes off the left ventricle. Pulmonary trunk comes off the right ventricle. Four regions: heart, ascending aorta, pulmonary trunk and phrenic nerves.
