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Cardiovascular

Notes from section 1

TermDefinition
Cardiovascular Pertaining to the heart and blood vessels. Composed of heart, arteries and veins.
Heart Sits between the lungs; behind the sternum (breast bone) in the mediastinum. It is divided left and right by the septum (a muscular) wall. It has a two layered protective membrane. Called the Pericardium
Pericardium Two layers, one sac inside another. Parietal pericardium and visceral pericardium.
Parietal Pericardium Lies posterior and adjacent to the thoracic vertebrae and inferiorly to the diaphragm. It provides an efficient barrier to infection from surrounding structures.
Visceral Pericardium or Epicardium Adheres to the heart and the first several centimeters of the great vessels. Pericardial fluid lubricates the pericardium and facilitates movement during the heart's pumping action.
Great Vessels Aorta, Pulmonary Trunk, Pulmonary Veins, Superior and Inferior Vena Cava
Heart Layers Epicardium, myocardium, innermost endocardium
Epicardium or Visceral Pericardium Covers the heart's surface and extends to the great vessels. (Aorta, Pulmonary Trunk, Pulmonary Veins, Superior and Inferior Vena Cava)
Myocardium Is the contracting muscle of the heart and consists of striated muscle fibers interlaced into bundles.
Endocardium Innermost muscle is composed of a thin layer of endothelium and a thin layer of connective tissue.
Created by: gbrown81367
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