Ch. 5 Cardiac Conduction Terms Flashcards
0
Q
atrioventricular node (AV)
A
neurological tissue that receives and amplifies the signal from the SA node
1
Q
sinoatrial node (SA)
A
the pacemaker; responsible for initiating electrical conduction of the heartbeat
2
Q
bundle of His
A
neurological fibers that receive input from the AV node and pass it to the Purkinje fibers
3
Q
Purkinje fibers or network
A
transmit pulses from the bundle of His to right and left ventricles, causing them to contract
4
Q
polarization
A
resting; resting state of a myocardial cell
5
Q
depolarization
A
contraction of a myocardial cell (de = not; polarization = resting)
6
Q
repolarization
A
recharging a myocardial cell from a contracted state to a resting state
7
Q
normal sinus rhythm (NSR)
A
regular rhythm of a heartbeat (60-100 bpm)
