Lec1D: Cardiac Electrophysiology

Question 1

What is the appearance of cardiac action potential dependent on?

Answer 1

dependent on WHERE it is measured

Question 2

Where are two types of cardiac action potentials. What are they?

Answer 2

1) Non-pacemaker aka Fast response AP

2) Pacemaker aka Slow response AP

Question 3

Characteristics of non-pacemaker aka fast response AP?

Answer 3

occurs in atria, ventricles and purkinje fibers.

- undergoes rapid depolarization

Question 4

Characterisitics of a pacemaker aka slow response?

Answer 4

occurs in the SA node and AV node

-undergoes slow depolarization