Smooth muscle is innervated by the autonomic nervous system. What are the 'swellings' along the axons that release neurotransmitters called?
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Correct answer: Varicosities
Autonomic nerves do not form discrete neuromuscular junctions in most smooth muscle. Instead, they have multiple bulbous swellings called varicosities that release neurotransmitter into the general vicinity of the muscle cells.
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