Create an account
Obstructions of the ______ will cause a more severe myocardial infarction(MI) than the obstruction of any of the others.
left coronary artery (LCA)
These are features of cardiac muscle fibers except
they have about the same endurance as skeletal muscle fibers
This is the correct path of an electrical excitation from the pacemaker to a cardiocyte in the left ventricle (LV)
sinoatrial (SA) node - atrioventricular (AV) node - atrioventricular (AV) bundle- Purkinje fibers - cardiocyte in LV
The long plateau in the action potential observed in cardiocytes is probably related with _____ staying longer in their cytosol
When the left ventricle contracts, the____ valve closes and the _____ valve is pushed open
Mitral valve stenosis causes blood to leak back into the _____ when the ventricle contract
Mitral valve prolapse (MVP) generates a murmur associated with the _____ heart sound that occurs when the _____
lubb (SI); ventricles contract
This is the correct sequence of events of the cardiac cycle
ventricular filling - isovolumetric contraction - ventricular ejection - isolvolumetric relaxation
Assume that the left ventricle of a child's heart has an EDV= 90mL, and ESV= 60mL, and a cardiac output of 2,400mL/min. His SV and HR are
SV= 30mL/beat, HR= 80 bpm.
Cardioinhibitory centers in the ____ receive input from ______
medulla oblongata; chemoreceptors in the aortic arch
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