Neuromuscular junction

  • Site where motor neurone meets the muscle fibre

    • Separated by gap called the neuromuscular cleft

  • Motor end plate

    • Pocket formed around motor neurone by sarcolemma

  • Acetylcholine is released from the motor neurone

    • Depolarisation of muscle fibre

similarity

difference

structure

Acetylcholine is the neurotransmitter for both

The dopamine synapse may have enzymes like monoamine oxidase to break down dopamine, whereas neuromuscular junction uses acetylcholinesterase to break down acetylcholine in synaptic cleft

function

Both have the function of carrying an impulse

Neurotransmitter at the dopamine synapse is dopamine, involved in neurotransmission between neurones, neuromuscular junction uses acetylcholine - signal muscle contraction