heart anatomy.ppt - Anatomy & physiology of the heart Heart...

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Anatomy & physiology of the heart
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Heart Anatomy Size, Location, and OrientationEnclosed in the mediastinum Base (posteriorsuperior portion) and Apex (inferioranterior portion)
Heart AnatomyCoverings Pericardium protects the heart anchors the heart to surrounding structures such as the diaphragm and the great vessels prevents overfilling of the heart with blood
Heart AnatomyCoverings pericardial cavity contains a film of serous fluid pericarditis: inflammation of the pericardium which may lead to adhesions between the layers or the buildup of fluid in the pericardial cavity (cardiac tamponade)
Heart AnatomyHeart Wall Epicardium Myocardium bulk of the heart consisting mainly of cardiac muscle
Heart AnatomyHeart Wall Endocardium simple squamous epithelium and a thin CT layer that lines the heart chambers and valves and is continuous with the endothelial lining of the blood vessels
Heart AnatomyChambersAtria Features small, thin-walled chambers Functions receiving chambers for blood returning to the heart from the circulation push the blood into the adjacent ventricles.
Heart AnatomyChambersAtria Receive blood from right side Superior and Inferior Vena Cava Coronary Sinus (draining the myocardium) left side Pulmonary Veins
Heart AnatomyChambersVentricles Features make up most of the mass of the heart the walls of the left ventricle are 3X thicker than those of the right
Heart AnatomyChambers Ventricles Functions discharging chambers of the heart propel blood to Pulmonary Trunk (right ventricle), Aorta (left ventricle)
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Heart AnatomyPathway of Blood Through the Heart Pulmonary Circuit functions strictly as gas exchange the right side of the heart is the pulmonary circuit pump this is a short, low-pressure circuit
Heart AnatomyPathway of Blood Through the HeartSystemic Circuit ofunctions as both gas and nutrient exchange othe left side of the heart is the systemic circuit pump othis is a long, high-resistance pathway through the entire body

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Term
Fall
Professor
N/A
Tags
Bicuspid, Aortic

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