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Documents A. Cardiovascular.docx

Anatomy and Physiology A. Anatomy 1. Layers a. pericardium: fibrous sac that encloses the heart b. epicardium: covers surface of heart c. myocardium: muscular portion of…

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BODY SYSTEMS BODY SYSTEMS Respiratory System The lungs are the main organ in the Respiratory System. - The respiratory System moves gases in and out of the body. Words to…