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acetycholinesterase

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Q: What is the substance that halts the stimulation of a muscle fiber by a neuron called?
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What substance crosses the gap between a neuron and a muscle fiber?

This substance is called as neurotransmitter. Here it is acetylcholine.


Weak stimulation of a motor neuron causes the muscle to what?

contract weakly


What stops muscle stimulation when the motor neuron ceases firing?

Acetylcholinesterase is the enzyme that stops muscle stimulation when the motor neuron ceases firing. This enzyme enables acetyl and choline to release their binding sites.


The area of the skin where stimulation generates action potentials in a particular sensory neuron is called that neuron's?

receptive field


A brief change in electrical voltage in the neuron in response to stimulation is called what?

an action potential


Just what does pass from neuron to the muscle cells?

via chemicals called neurotransmitters, expressed at sites called synapses, which are tiny gaps between a neuron and another neuron or a muscle cell.


The combination of a neuron and the muscle fibers it associates with is called?

Motor unit = the single motor neuron and the multiple muscle fibers that it innervates.


What motor neuron and all the muscle fibers it innervates called?

the motor unit


What site where the motor neuron and muscle cell meet is called the?

Neuromuscular junction


Which of these cells are likely to have multiple nuclei skeletal muscle cardiac muscle smooth muscle or neuron?

skeletal smooth muscle neuron


What are the sources of stimulation that start a nerve impulse?

An impulse begins when a neuron is stimulated by another neuron or by the environment.


Is neuron a muscle?

No.