4298MedicalMedium
SA node acts as a pacemaker of the heart because of the fact that it________?
AHas rich sympathetic innervation
BGenerates impulses at the highest rate
CHas poor cholinergic innervation
Dis capable of generating impulses
Correct answer
B. Generates impulses at the highest rate
Explanation
The correct answer is Generates impulses at the highest rate.