click below
click below
Normal Size Small Size show me how
EKG Chapter 2
EKG Chapter 2 - conduction system parts
Question | Answer |
---|---|
delays the electrical conduction through the heart | AV Node |
ability of the heart to initiate an electrical impulse | automaticity |
branches off the bundle of His that conduct impulses to the left and right ventricles | bundle branches |
ability of the heart cells to receive and transmit an electrical impulse | conductivity |
an electrical current that initiates the contraction of the heart muscle | depolarization |
ability of the heart muscle cells to shorten in response to an electrical stimulus | contractility |
ability of the heart muscle cells to respond to an impulse or stimulus | excitability |
heart muscle cells return to their resting electrical state and the heart muscle relaxes | repolarization |
initiates the heartbeat | SA node |
distribute electrical impulses from cell to cell throughout the ventricles | purkinje fibers |