Section Handout #5

Section Handout #5 - [email protected] OH Tuesdays 4PM...

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[email protected] OH: Tuesdays @ 4PM @ Café Roma BIPN 100 Hand-Out #5 *Clarification of Diagram: afterload (a.k.a. end systolic volume) is increased from exercise to rest & decreased from rest to exercise (exercise increases sympathetic effects on contractility; contractile fibers innervated ONLY by sympathetic system) *REMEMBER: the pressure formed by the left ventricle is greater than that formed by the right ventricle; HOWEVER, the volume pumped out by each is the SAME B: mitral valve opens B C: passive filling (volume increases but pressure does not) C: mitral valve closes; ALSO: end-diastolic volume (a.k.a. preload; end-diastolic, because it is at the end of relaxation) C D: isometric contraction D: aortic valve opens D A: emptying A: aortic valve closes; ALSO: end-systolic volume (a.k.a. afterload; end-systolic, because it is at the end of contraction) A B: isometric contraction VALUES: EDV ~120-130mL Stroke Volume ~70mL ESV ~50-60mL EQUATIONS: CARDIAC OUTPUT = STROKE VOLUME x HEART RATE
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This note was uploaded on 04/11/2008 for the course BIPN 100 taught by Professor French during the Spring '07 term at UCSD.

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Section Handout #5 - [email protected] OH Tuesdays 4PM...

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