1. The atrioventricular (AV) node is located in the: a. Right ventricle              c. Purkinje fiber tract b. Left ventricle                d. Floor of the right atrium 2. The intrinsic firing rate...

1. The atrioventricular (AV) node is located in the:

a. Right ventricle              c. Purkinje fiber tract

b. Left ventricle                d. Floor of the right atrium

2. The intrinsic firing rate of the AV node is ________________________ beats per minute (BPM).

a. 60–100             c. 35–45

b. 25–35               d. 40–60

3. The intrinsic firing rate of the SA node in the adult is ________________________ BPM.

a. 20–60               c. 60–100

b. 40–80               d. 80–100