N-NF-II-125 Chapter Notes -Superior Vena Cava, Tricuspid Valve, Heart Valve
Document Summary
The respiratory and cardiovascular systems are closely linked and dependent on one another to deliver oxygen to the tissues of the body. Alterations in function of either system can affect the other and lead to tissue hypoxia (lack of oxygen). The heart and the blood vessels make up the cardiovascular system. Together with blood, it is the major transport system of the body, bringing oxygen and nutrients to the cells and removing wastes for disposal. The heart serves as the system"s pump, moving blood through the vessels to the tissues. Heart: the heart is a hollow, cone-shaped organ about the size of a fist. It is located in the mediastinum, between the lungs and underlying the sternum. It is enclosed by a double layer of fibro-serous membrane known as the pericardium: the parietal, or outermost, pericardium serves to protect the heart and anchor it to surrounding structures.