Anatomy 1, Game 6B
Ride one acetylcholine molecule across the neuromuscular junction, learn every station on the way, then zoom out to see motor units.
Section 6.2, The Neuromuscular Junction
The route: out of a synaptic vesicle, across the synaptic cleft, onto a receptor, then cleared by AChE.
Scroll sideways to see the whole drawing.