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Department
Biological Sciences
Course
BIOC34H3
Professor
Stephen Reid
Semester
Winter

Description
Lecture 3 & 4 Study Notes 1 2 3 4 5 * Phase 1: [Diastole period] Mid-Late Diastole: Ventricular filling Pressure in RALA > Pressure in RVLV i.e. pressure in atria is greater than in ventricles Volume in RV increasing (mostly due to passive filling) Passive filling (90%) more than due to atrial depolarisation (10%) Respective atrioventricular valve open (Right side = Tricuspid valve; Left side = Bicuspid valve) Passive flow of blood into aorta: o Aorta acts as pressure reservoir *Phase 2: [Systole period] Isovolumetric Contraction: no blood movement, ventricular volume remains constant as ALL valves closed Pressure in RVLV > Pressure in RALA, hence AV valve closed www.notesolution.com
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