Problem: Action potentials in the heart move from one contractile cell to the next via ________.a. chemical synapses using acetylcholineb. chemical synapses using norepinephrinec. intercalated disksd. non-myelinated motor neurons

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Action potentials in the heart move from one contractile cell to the next via ________.

a. chemical synapses using acetylcholine

b. chemical synapses using norepinephrine

c. intercalated disks

d. non-myelinated motor neurons