KINE 1P90 Lecture Notes - Lecture 8: Electrical Conduction System Of The Heart, Syncytium, Endocardium
27 Mar 2016
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Document Summary
The cardiovascular system consists of the heart, and vessels, arteries, capillaries and veins. A functional cardiovascular system is vital for supplying oxygen and nutrients to tissues and removing wastes from them. The pulmonary circuit is made up of vessels that convey blood from the right ventricle to the pulmonary arteries to the lungs, alveolar capillaries, and pulmonary veins leading from the lungs to the left atrium. The systemic circuit includes the aorta and its branches leading to all body as well as the system of veins returning blood to the right atrium. tissues. The heart lies in the mediastinum under the sternum; its apex extends to the fifth intercostal space. It is made of two layers: the outer, tough connective tissue fibrous pericardium surrounding a more delicate visceral pericardium (epicardium) that surrounds the heart. At the base of the heart, the visceral pericardium folds back to become the parietal pericardium that lines the fibrous pericardium.
