Flashcards in Electrical activity of heart Deck (13)
Period of contraction, force generation and blood expulsion
Period of relaxation, filling with blood, readying for next systole
Left atrial fibrillation would most greatly affect filling of which other heart chamber?
This is the first to depolarize, and is located in right atrium. What does it do?
SA node, pacemaker which causes atrial contraction
True/False: there are gap junctions between an atrial muscle to a ventricle muscle.
False, there are NONE, no comunication
A lot of arrhythmia are due to a problem in the________.
AV node ____ conduction.
_______ has large diameter cells and speeds up ventricular myocytes.
With ventricular myocytes ________ occurs.
What is the flow of depolarization?
SA node fires
Septum and inner layer of ventricular muscle depolarizes
Coordination of depolarization allows for maximal blood ejection.
How does depolarization start in heart?
Starts at apex in Inter-ventricular septum depolarizes first and then depolarization wave heads up towards atrium
SA node is the pacemaker of the heart because why?
it depolarizes the fastest