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| an organ system that distributes blood to all parts of the body-carries oxygen, nutrients, cell wastes, hormones, and other substances vital for homeostasis to and from the cells |
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| size of a person's fist, cone-shaped; weighs less than a pound; works together with the circulatory system to pump blood. |
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| the medial cavity of the thorax |
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| is the lowest superficial part of the heart; directed downward toward the hip and rests on the diaphragm |
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| points towards the right shoulder and lies beneath the second rib; point where the great vessels emerge. |
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| a double-wall; sac that encloses the heart |
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| part of the pericardium that helps to protect the heart and anchors it to the diaphragm and sternum |
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| a double membrane deeper than the fibrous pericardium; contains two layers; the layers lubricate the heart to prevent friction from occurring during heart activity |
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| inflammation of the pericardium that forms painful adhesion that interfere with heart movement. |
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| epicardium, myocardium, endocardium |
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| aka-visceral pericardium-a serous membrane that tightly hugs the external surface of the heart and is actually part of the heart wall |
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| the layer of the heart that contracts; consists of thick bundles of cardiac muscles that are twisted together |
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| a thin, glistening sheet of endothelium that lines the heart chambers |
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| 4 hollow chambers-2 atria and 2 ventricles |
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| a chamber of the heart receiving blood from the veins; superior heart chamber |
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| discharging chambers of the heart |
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| a vessel that arises from the right ventricle, extends upward, and divides into the right and left pulmonary arteries that convey unaerated blood to the lungs |
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aka-precava or SVC-
a large, diameter, yet short vein that carries deoxygenated blood from the upper half of the body to the right atrium |
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| aka-posterior vena cava is the large vein that carries de-oxygenated blood from the lower half of the body into the right atrium of the heart |
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| aka- interatrial septum; a septum that divides the heart longitudinally |
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| the large blood vessels that carry blood from the heart to the lungs |
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| a vein carrying oxygenated blood from the lungs to the left atrium of the heart |
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| a system of blood vessels that carry blood to and from the lungs for gas exchange |
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| the major systematic artery; arises from the left ventricle of the heart |
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| system of blood vessels that carries nutrient and oxygen-rich blood to all body organs |
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| a chamber in which blood enters into the heart |
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| The wall between the atria of the heart. |
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