Missouri University of Science and Technology tuition is $7,734 per year for in-state residents. This is 13% more expensive than the national average public four year tuition of $6,841. The cost is 53% cheaper than the average Missouri tuition of $16,299 for 4 year colleges.
Systole: Period of ejection. AV valves closed Semilunar valves opened AV valves closed Semilunar valves closed Diastole: Period of isovolumic relaxation. Blood flowing back toward the relaxed ventricles causes the semilunar valves to close, which is the beginning of ventricular diastole.
I know that during ventricular diastole the cuspid valves are open and the semilunar valves are closed. And during ventricular systole the cuspid valves close and semilunar valves are open. BUT atrial systole and diastole is sooo confusing :S. Please someone explain.