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anatomy Ch22h - Human Anatomy McKinley O'Loughlin Chapter...

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Human Anatomy McKinley & O'Loughlin Chapter 22: Heart Functions of the Heart o Connects to blood vessels that transport blood between the heart and other body tissues. o Two basic types of vessels: arteries veins o The great vessels Characteristics and Functions of the Heart o Backflow of blood is prevented by valves within the heart o Acts like two independent, side-by-side pumps that work independently but at the same rate. o Develops blood pressure Pulmonary and Systemic Circuits o The pulmonary circuit consists of the chambers on the right side of the heart (right atrium and ventricle) as well as the pulmonary arteries and veins.
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o The systemic circuit consists of the chambers on the left side of the heart (left atrium and ventricle), along with all the other named blood vessels. Pulmonary and Systemic Circuits o Oxygenated blood o Gas exchange in tissues occurs from capillaries. o Deoxygenated blood (high in carbon dioxide and waste products) The superior and inferior venae cavae The right atrium Anatomy of the Heart o Located left of the body midline posterior to the sternum in the middle mediastinum. Anatomy of the Heart o The base o The apex Pericardium o Heart is contained in a fibrous, serous sac held in place within the mediastinum by connective tissue.
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