Cardiac conduction: true or false?

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   The SA node is the heart's pacemaker

2. Statement is true

   Yes

   Statement

   The AV node delays the impulse about 100 ms

3. Statement is true

   No

   Statement

   The bundle of His runs through the interatrial septum

4. Statement is true

   Yes

   Statement

   Purkinje fibers conduct quickly to the contractile cells

5. Statement is true

   No

   Statement

   Depolarization plays no role in contraction

Instructions

Tap True or False for each statement.

Explanation