Editor: Shirley A. Jones
Publisher: F.A. Davis Company, 2006 The heart, located in the mediastinum, is the central structure of the cardiovascular system. It is protected by the bony structures of the sternum anteriorly, the spinal column posteriorly, and the rib cage.
The cardiovascular system is a closed system consisting of blood vessels and the heart. Arteries and veins are connected by smaller structures in which electrolytes are exchanged across cell membranes.
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