Heart Equations And Info

Heart Equations And Info - The Heart Normal ESV = 65 mL...

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The Heart Normal ESV = 65 mL Normal EDV = 135 mL The Path: O 2 blood bumps into the left atrium via the pulmonary vein The atrial pressure increases which opens the mitral valve and begins blood flow into the left ventricle How much of atrial blood enters the ventricle??? The atrium contracts to remove remaining 20% of blood to the ventricle. MITRAL VALVE CLOSES (LUB) Ventricle isovolumic contraction Pressure in left ventricle opens the aortic valve and blood is sent to the tissues Aortic valve closes as after the ventricle empties NOTE VENTRICLE ALWAYS HAS RESIDUAL VOLUME!!!!!! CO = heart rate *stroke volume Blood loses pressure as it moves from aorta back to the vena cava (caused by friction in the vessels) Stroke Volume = End Diastolic Volume – End systolic Volume Frank-Starling : Cardiac Output is directly related to the lengthening of sarcomeres/ stroke volume/preload. Ejection fraction= SV/(SV+RV) fraction of blood pumped out of the ventricle with each heart beat Preload = end diastolic pressure (the pressure stretching the heart)
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This note was uploaded on 04/01/2010 for the course BIOEN 305 taught by Professor Korte during the Winter '10 term at University of Washington.

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Heart Equations And Info - The Heart Normal ESV = 65 mL...

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