heart - CHAPTER 17 1. THE HEART Identify the position of...

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CHAPTER 17 THE HEART 1. Identify the position of the heart in the thoracic cavity and discuss its relationship to the pericardium as well as the pericardial layers. 1. Describe gross and microscopic anatomy of the heart, including the conduction system. 1. Trace the pattern of blood flow between heart chambers and between the heart valves and major vessels leading directly to or from the heart. 1. Explain the physiology of cardiac muscle contraction 1. Explain the cardiac cycle, including basic rhythm of heartbeat, pressure and volume changes, heart sounds, and electrocardiogram 1. Explain regulation of stroke volume and heart rate 2. Define myocardial infraction and angina pectoris.
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Deaths-Leading Causes (Data are for the U.S. from 2004) 1. Heart disease: 654,092 2. Cancer: 550,270 3. Stroke (cerebrovascular diseases): 150,147 4. Chronic lower respiratory diseases: 123,884 5. Accidents (unintentional injuries): 108,694 6. Diabetes: 72,815 7. Alzheimer's disease: 65,829 8. Influenza/Pneumonia: 61,472 9. Nephritis and Nephrotic syndrome: 42,762 10. Septicemia: 33,464 (Source CDC, NDHS)
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Leading Causes of Death in New Jersey
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Figure 17.1 Base of Heart Apex of Heart
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Heart Coverings and Layers of the Heart Fibrous Pericardium Parietal Pericardium Pericardial cavity –filled with fluid Visceral Pericardium / Epicardium Myocardium Endocardium Pericardium - membranes that cover the heart Heart Wall Layers
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Flow of Blood Through the Heart Right Atrium Left Atrium Right Ventricle Left Ventricle Superior and Inferior Vena Cavae Superior Portion of the body Inferior Portion of the body Tricuspid Valve Pulmonary Semilunar Valve LUNGS Pulmonary Arteries Pulmonary Veins Mitral (bicuspid) valve Aorta BODY Aortic Semilunar Valve Coronary veins Interventricular Septum
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Coronary Circulation The tissue of the heart’s blood supply Heart works continuously thus requires a constant supply of oxygen and nutrients Left Coronary Artery Supplies: left atrium, portions of both ventriclesAnd the interventricular septum
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heart - CHAPTER 17 1. THE HEART Identify the position of...

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