BIOC33H3 Lecture Notes - Stroke Volume, Torr, Systolic Geometry
Document Summary
Assignments: first one due = lab 6, go through exercises in simulation - have to present data and answer some questions, not formal reports - just need to present data and answer questions. Cardiac cycle: follow progression from mid-late diastole, then 2 stages of systole/contraction. When heart is contracting (isovolumetric contraction), volume of blood in the heart is not changing because the pressure differences are such that all the heart valves are closed. Ejection phase (ventricular ejection: blood is pumped from left ventricle to aorta and gets distributed to the systemic circuit and lungs, early diastole. Isovolumetric relaxation stage - heart muscles relax but there is no change in blood volume because pressure relationship. Early diastole - valves are open, ventricles begin to fill again: important variables on chart - volume of ventricle (very bottom) Late stage of diastole where it is finishing filling process, systole - dramatic drop, then starts to fill again.
