Select the correct option. Acetyl choline is a
A. Excitatory chemical transmitter
B. Inhibitive chemical transmitter
C. Relaxative of Atrial pacemaker.
D. Steroid form
Answer:A
Select the correct option. Acetyl choline is a
A. Excitatory chemical transmitter B. Inhibitive chemical transmitter C. Relaxative of Atrial pacemaker. D. Steroid form