Class 11 Cardiovascular and heart failure

Class 11 Cardiovascular and heart failure - Cardiovascular...

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NSG 2500
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2 Heart Two-sided pump that circulates 5-6 liters of blood every minute 4 chambers: 2 atria and 2 ventricles Endocardium lines the heart chambers, myocardium is the strong muscular layer that provides pumping power, epicardium is outer, serous layer of heart Valves function to maintain one-way flow of blood
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5 Conduction by special cells that carry electrical impulses: SA node, AV node, bundle of HIS, right and left bundle branches and Purkinje fibers Blood supply received from coronary arteries Collateral circulation may provide sufficient blood supply
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6 Blood Vessels Arteries, veins and capillaries Intima is inner lining composed of endothelial cells next to the blood Media in middle layer of muscle and elastic tissue Adventitia is outer layer of connective tissue
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7 Blood Functions to nourish and oxygenate body cells, protect the body from invading microorganisms, and initiate hemostasis when a blood vessel is injured Made up of plasma and solid particles (cells)
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8 Cardiovascular Disorders Most vascular diseases result from malfunction of endothelial cells or
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This note was uploaded on 04/01/2012 for the course BIOL 202 taught by Professor Buckley during the Spring '12 term at University of Massachusetts Boston.

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Class 11 Cardiovascular and heart failure - Cardiovascular...

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