Question
Question: SA node is called pace maker of the heart. Why?...
SA node is called pace maker of the heart. Why?
A
It can change contractile activity generated by AV node
B
It delays the transmission of impulse between the atria and ventricles
C
It gets stimulated when it receives neural signal
D
It initiates and maintains the rhythmic contractile activity of heart
Answer
It initiates and maintains the rhythmic contractile activity of heart