Create an account
What is the cardiac cycle?
1) ventricular filling
2) isovolumetric contraction
3) ventricular ejection
4) Isovolumetric relaxation
What happens during ventricular filling
Ventricular muscle relaxes, intraventricular volume increases and pressure drops below atrial pressure. AV valves open as blood flows into the ventricles, atria contract to top off the ventricles.
What happens during isovolumetric contraction?
Systole begins, but no blood pumped out of the ventricles yet, pressure rises in ventricles, AV valves close to prevent backflow into atria
What happens during ventricular ejection?
Ventricles continue to contract, pressure in ventricles rise above the pressure in aorta and pulmonary artery, semilunar valves open, blood moves out of ventricles
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together