If the synapse is a neuromuscular junction, then there is a(an)
_________ at step ____ in response to release of ________ at step
_______.
A) action potential; 1; acetylcholine; 4
B) inhibitory post-synaptic potential; 2;
norepinephrine; 5
C) second messenger released; 5; epinephrine; 4
D) exhibitory post-synaptic potential; 5;
acetylcholine; 4
please explain!
Homework Answers
D. Excitatory post synaptic potential; 5; acetylcholine; 4
- Epinephrine and norepinephrine are neurotransmitters of sympthesymp nervous system. Motor neurons (that innervate skeletal muscle) release acetylcholine at neuromuscular junction.
- When action potential is generated in motor neuron, then it travels down the axon to axon terminal. It then causes release of acetylcholine from synaptic vessel. The released acetylcholine then binds to Nm receptor on muscle and generate EPSP.
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