True/False
The action potential spreads through the atria by gap junctions, but there are no gap junctions present in the ventricles, so the impulse must be propagated throughout the ventricular myocardium by the bundle of His and Purkinje system.
Correct Answer:
Verified
Correct Answer:
Verified
Q126: Indicate which ion is involved in each
Q127: Sympathetic stimulation increases the heart rate.
Q128: Compare a stenotic and insufficient valve.
Q128: Pacemaker activity by the Purkinje fibers is
Q129: The chordae tendineae<br>A) keep the AV valves
Q132: Use the following answer code to indicate
Q133: If the EDV were held constant, increased
Q134: The term diastole means<br>A) closure.<br>B) conduction.<br>C) contraction.<br>D)
Q135: Sympathetic stimulation increases contractile strength by:<br>A) decreasing
Q151: The normal pacemaker of the heart is