6" Sinuatrial node (SA) is the pacemaker of the heart because: O a. It has the largest rate of activity out of b. It has the largest resting membrane potential O c. Is has autonomic innervations O d....

Sinuatrial node (SA) is the pacemaker of the heart because:

Extracted text: 6" Sinuatrial node (SA) is the pacemaker of the heart because: O a. It has the largest rate of activity out of b. It has the largest resting membrane potential O c. Is has autonomic innervations O d. It is affected by hormones O e. It is protected by surrounding tissues Next page us page