Which statement is correct about acetylcholine? Question 34 options: Acetylcholine depolarizes pacemaker cells by opening Na+ channels Acetylcholine hyperpolarizes pacemaker cells by opening K+ channels none of the statements listed here is correct Acetylcholine hyperpolarizes pacemaker cells by opening Na+ channels Acetylcholine depolarizes pacemaker cells by opening K+ channels Page 34 of 52 33 of 52 questions saved