BIOL-2230 Chapter Notes - Chapter 18: Inferior Vena Cava, Superior Vena Cava, Heart Valve
10 Feb 2017
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Document Summary
Pulmonary circuit: system of blood vessels that serves gas exchange in the lungs. Systemic circuit: system of blood vessels that serves gas exchange in the body tissues. Mediastinum: the medial cavity of the thorax containing the heart, great vessels, thymus, and parts of the trachea, bronchi, and esophagus. Pericardium: double-layered sac enclosing the heart and forming its superficial layer; has fibrous and serous layers. Parietal layer: pertaining to the walls of a cavity. Visceral layer: pertaining to an internal organ of the body or the inner part of a structure. Myocardium: layer of the heart wall composed of cardiac muscle. Endocardium: endothelial membrane that lines the interior of the heart. Atria: the two superior receiving chambers of the heart. Ventricles: paired, inferiorly located heart chambers that function as the major blood pumps. Superior vena cava: vein that returns blood from body regions superior to the diaphragm. Inferior vena cava: vein that returns blood from body areas below the diaphragm.
