Multiple Choice
When is the generation of an action potential impossible in a neuron?
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45. Nervous System
Neurons and Action Potentials
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What is the name of the neurotransmitter released at the skeletal neuromuscular junction?
A
Acetylcholine
B
Dopamine
C
Serotonin
D
GABA
Verified step by step guidance1
Step 1: Understand the context of the question. The skeletal neuromuscular junction is the site where a motor neuron communicates with a skeletal muscle fiber to initiate muscle contraction.
Step 2: Recall that neurotransmitters are chemical messengers released by neurons to transmit signals across synapses to target cells, such as muscle fibers.
Step 3: Identify the specific neurotransmitter associated with the skeletal neuromuscular junction. This neurotransmitter is responsible for triggering muscle contraction by binding to receptors on the muscle cell membrane.
Step 4: Review the options provided: Acetylcholine, Dopamine, Serotonin, and GABA. Note that Acetylcholine is the neurotransmitter specifically involved in skeletal muscle contraction, while the others are associated with different functions in the nervous system.
Step 5: Conclude that Acetylcholine is the correct answer based on its role in transmitting signals at the skeletal neuromuscular junction.
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