Review Questions with Answers 100% Pass
| Graded A+
Administrator [Date] [Course title]
,1. SA node the major pacemaker of
the heart
2. 60-100 inherent rate of the SA
node
3. 40-60 inherent rate of the AV
node
4. 20-40 inherent rate of the
ventricles
(purkinjie fibers)
5. systole phase of contraction
6. diastole phase of relaxation
7. p wave what does atrial
depolariza- tion show
on the ECG?
8. QRS complex what does ventricle
depolar- ization show on
the ECG?
9. T wave what does repolarization
show on the ECG?
10. increase what does sympathetic
stimu- lation do to the
heart rate?
11. decrease what does
parasympathetic
stimulation do to the
heart rate?
12. absolute refractory period the period immediately
follow- ing the firing of a
nerve fiber when it
, cannot be stimulated no
matter how great a
stimu- lus is applied
13. relative refractory period during the ventricular
cardiac cycle when all
cardiac cells are not fully
repolarized and a strong
enough stimulus can