Electrophysiology Quizizz

Match the concept to it's definition

• Automaticity

• Ability of cardiac cells to respond to stimuli

• Contractility

• Ability of cardiac cells to shorten

• Conductivity

• Ability of cardiac cells to pass on the impulse

• Excitability

• Ability of cardiac cells to generate electricity

Place the cardiac conduction system in the correct order.

• Bundle of His

• Sinoatrial node

• Right/Left bundle branch

• Atrioventricular Node

• Purkinje Fibers

The first step in the cardiac cycle is the ​ (a)   needed to start the muscle contraction. Next is the ​ (b)   phase in which the heart contracts and the ​ (c)   phase in which the heart relaxes and refills.

• electrical impulse
• systole
• diastole

SA node is the primary pacemaker and has an intrinsic rate of ​ (a)   . The ​ (b)   is the secondary pacemaker and has a rate of ​ (c)   . The ​ (d)   are the final pacemaker and have a rate of ​ (e)  

• 60-100
• AV node
• 40-60
• purkinje fibers
• 20-40

The ___ refractory period last from the middle to the end of the heart beat and can initiate another heat beat with a large amount of energy.