cardiac powerpoint

cardiac powerpoint - Systems Chapter22 CIRCULATORYSYSTEM...

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Structure and Function of the  Cardiovascular and Lymphatic  Systems Chapter 22
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CIRCULATORY SYSTEM Heart Right heart Pulmonary circulation Pumps blood through the lungs  Left heart Systemic circulation Pumps blood through the body Mediastinum Heart wall Pericardium Pericardial cavity and fluid Myocardium Endocardium
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CHAMBERS OF THE HEART Right atrium Left atrium Right ventricle Left ventricle
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THE VALVES OF THE HEART Atrioventricular valves Tricuspid valve Mitral valve Semilunar valves Pulmonic semilunar valve Aortic semilunar valve
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THE GREAT VESSELS Superior and inferior venae cavae (SVC and IVC)  Pulmonary artery (trunk) Right and left pulmonary arteries Pulmonary veins Aorta
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BLOOD FLOW Cardiac cycle Diastole Systole Phases of the cardiac cycle
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THE CORONARY VESSELS Right coronary artery  (RCA) Left coronary artery  (LCA) Left anterior  descending artery  (LAD) Circumflex artery
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STRUCTURES THAT CONTROL  HEART ACTION Cardiac action potentials Conduction system Sinoatrial node (SA) Intranodal pathways Bachmann bundle Atrioventricular node (AV) Bundle of His (AV bundle) Right and left bundle branches Purkinje fibers
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STRUCTURES THAT CONTROL  HEART ACTION Propagation of cardiac action potentials Membrane potential Depolarization Repolarization Refractory period Electrocardiogram Automaticity Rhythmicity
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ELECTROCARDIOGRAM
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STRUCTURES THAT CONTROL  HEART ACTION Cardiac innervation Sympathetic nerves Parasympathetic nerves Adrenergic receptor function Beta-adrenergic receptors Norepinephrine or epinephrine
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MYOCARDIAL CELLS Nearly identical to skeletal muscle cells Intercalated disks Actin, myosin, and the troponin-tropomyosin  complex Myocardial metabolism Myocardial oxygen consumption
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CARDIAC PERFORMANCE Cardiac output Preload Left ventricular end-diastolic volume Laplace law Frank-Starling law of the heart Afterload This is the load that the heart muscle must move after it starts  to contract Heart rate Cardiovascular control center Cardioexcitatory and cardioinhibitory centers Neural reflexes Atrial receptors Hormones and biochemicals
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CARDIAC PERFORMANCE (CONTD) Myocardial contractility Stroke volume Inotropic agents Oxygen and carbon dioxide levels Cardiac output Volume of blood flowing through either the systemic  or pulmonary circuit in liters per minute
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CARDIAC HEART SOUNDS S1 S2 S3 S4
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cardiac powerpoint - Systems Chapter22 CIRCULATORYSYSTEM...

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