Create an account
This is the hardest working cardiac chamber and therefore has the thickest myocardium.
These conducting fibers rapidly spread the electrical signal throughout the ventricles
Complete the sequence: blood flows from the right atrium to the right ventricle to the pulmonary artery to the
What event causes the pulmonic valve to open?
an increase in the pressure within the right ventricle
Complete the sequence: blood flows from the pulmonary capillaries to the pulmonary veins to the left atrium to the left ventricle to the
The atrioventricular node (AV node)
delays the electrical signal coming from the atria into the ventricles
The purpose of this structure is to momentarily delay the spread of the signal from the atrium to the ventricles
Which of the following is a result of ventricular contraction?
Blood is pumped into the pulmonary artery and the aorta
Under what condition is blood most likely to flow "backward" (e.g., from the left ventricle back into the left atrium)?
an insufficient mitral valve
What is the name of the valve that prevents backflow of blood into the right atrium when the right ventricle contracts?
Which of the following is least descriptive of the myocardium?
thicker in the left atrium than the right ventricle
Which of the following is a function of a valve?
regulates the direction of the flow of blood through the heart
Which of the following is true of the structures of the electrical conduction system?
in normal sinus rhythm, the electrical signal arises within the SA node
Which of the following is least true of the aortic valve?
blood flows from the ventricle through this valve into the pulmonary artery
A hole in the interventricular septum causes
blood to shunt from the left ventricle to the right ventricle
Which group is incorrect?
structures that carry unoxygenated blood: right ventricle, venae cavae, pulmonary veins
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