Paul Zoll
Encyclopedia
Paul Maurice Zoll was a cardiologist and one of the pioneers in the development of the cardiac pacemaker
and cardiac defibrillator.
Cardiac pacemaker
right|thumb|350px|Image showing the cardiac pacemaker which is the SA nodeThe contraction of heart muscle in all animals with hearts is initiated by chemical impulses. The rate at which these impulses fire controls the heart rate...
and cardiac defibrillator.