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Cardiovascular & Peripheral Vascular:NURS 5220:Cardiovascular & Peripheral Vascular:Latest Updated A+ Score Guide
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Anatomy Position & Surface Landmarks The heart is described as resembling an: Upside-down triangle Precordium Anterior chest area overlying the: o Heart o Great vessels Mediastinum Apex Base • Heart sits on the left of midline • Pointed “bottom” portion of heart • “Top” of heart Position The heart is rotated so that: • Right side lies closer to the sternum Left side lies closer to the left nipple Heart Wall & Internal Structure Layers of the Heart Pericardium • Tough, fibrous sac surrounding heart Myocardium • Muscular wall • Performs the pumping action Endocardium Thin layer lining: Chambers Valves Internal structure The heart contains: • 4 chambers2 Atria 2 ventricles Septum 4 valves Function: Atria Hold blood
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