Opening of Acetylcholine Gated Cation Channels Leads to Muscle Contraction

Acetylcholine is the neurotransmitter at synapses between motor neurons and muscle cells, often called neuromuscular junctions. A single axon terminus of a frog motor neuron may contain a million or more synaptic vesicles, each containing 1000-10,000 molecules of acetylcholine; these vesicles often accumulate in rows in the active zone (Figure 7-43). Such a neuron can form synapses with a single skeletal muscle cell at several hundred points.

Your Heart and Nutrition

Your Heart and Nutrition

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