CBIO 2210: Cardiac Cycle
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30 Terms
What happens to atrial pressure during atrial contraction?
Increase
What happens to atrial volume during atrial contraction?
Decrease
What happens to ventricular pressure during atrial contraction?
Slight increase
What happens to ventricular volume during atrial contraction?
Increase
What valves are open/closed during atrial contraction?
AV valves are open
Semilunar valves are closed
What happens to atrial pressure during isovolumetric contraction?
Slight increase then decrease
What happens to atrial volume during isovolumetric contraction?
Increase
What happens to ventricular pressure during isovolumetric contraction?
Increase
What happens to ventricular volume during isovolumetric contraction?
No change
What valves are open/closed during isovolumetric contraction?
AV valves are closed
Semilunar valves are closed
What happens to atrial pressure during ventricular contraction?
Slow increase
What happens to atrial volume during ventricular contraction?
Increase
What happens to ventricular pressure during ventricular contraction?
Increase
What happens to ventricular volume during ventricular contraction?
No change
What valves are open/closed during ventricular contraction?
AV valves are closed
Semilunar valves begin to open
What happens to atrial pressure during ventricular ejection?
Slow increase
What happens to atrial volume during ventricular ejection?
Increase
What happens to ventricular pressure during ventricular ejection?
Increases then decreases
What happens to ventricular volume during ventricular ejection?
Decrease
What valves are open/closed during ventricular ejection?
AV valves are closed
Semilunar valves are open
What happens to atrial pressure during isovolumetric relaxation?
Increase
What happens to atrial volume during isovolumetric relaxation?
Increase
What happens to ventricular pressure during isovolumetric relaxation?
Decrease
What happens to ventricular volume during isovolumetric relaxation?
No change
What valves are open/closed during isovolumetric relaxation?
AV valves are closed
Semilunar valves are closed
What happens to atrial pressure during ventricular filling?
Decrease
What happens to atrial volume during ventricular filling?
Decrease
What happens to ventricular pressure during ventricular filling?
Slight increase
What happens to ventricular volume during ventricular filling?
Increase
What valves are open/closed during ventricular filling?
AV valves are open
Semilunar valves are closed