Dr Wendi’s Health

Cardiac Conduction System

Cardiac Conduction System

This video describes the electrical events that occur in the heart, pacemaker potential, ANS regulation, and comparison to the cardiac cycle.

Time Stamps

Contractile, excitable, and conducting cells 0:04 

Quick review of Action potential in a neuron 1:36 

Pacemaker potential and SA node action potential 3:34 

Electrical conduction through the heart 6:08 

ECG 9:58 

How ANS increases or decreases HR 12:16 

Arrhythmias and PVCs 13:29 

Back to cardiac cycle – comparison with ECG 15:37 

Calculate stroke volume 22:25 

Summary of events 23:08 

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