11_CH13_Heart_Circ - CH 13 Heart and Circulation Functions...

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CH 13 Heart and Circulation Functions and Components of the Circulatory System: REVIEW Composition of the Blood:  IN LAB Structure of the Heart Heart Valves Cardiac Cycle and Heart Sounds Pacemaker Potential Myocardial Action Potential Conducting Tissues of the Heart Conduction of the Impulse Excitation-Contraction Coupling in Heart Muscle The EKG Blood Vessels Atherosclerosis and  Cardiac Arrhythmias (NOT THIS) Lymphatic System (NOT THIS)
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Functions of Circulatory System Heart pumps blood thru cardiovascular system Includes arteries, arterioles, capillaries, venules, veins returns it to veins.  Lymph nodes are part of immune system.
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Structure of the Heart The heart has 4 chambers 2 atria receive blood from venous system 2 ventricles pump blood to arteries 2 sides of heart are 2 pumps separated by muscular septum Fig 13.10
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Fibrous Skeleton of the Heart – the  fibrous skeleton . myocardial unit. form another  myocardial unit. Fibrous skeleton also forms rings ( annuli fibrosi that hold the heart valves.
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Pulmonary Circulation Fig 13.10 Blood from tissues  enters  superior & inferior vena cavae which empty  into right atrium.   Blood then goes to right  ventricle which pumps  it through pulmonary  arteries to lungs.
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Systemic Circulation Oxygenated blood  from lungs passes  thruough  pulmonary veins to left  atrium, then to left  ventricle which  pumps it through  aorta to the body. Fig 13.10
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Fig 13.10 A diagram of the circulatory system Pulmonary circulation is  pa th o f  b lo o d fro m  rig ht  ve ntric le  thro ug h lung s   Systemic circulation: b lo o d fro m  le ft  b a c k to  he a rt. Rate of flow through 
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This note was uploaded on 02/12/2012 for the course BI 202 taught by Professor Winn during the Fall '10 term at Northern Michigan University.

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11_CH13_Heart_Circ - CH 13 Heart and Circulation Functions...

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