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the motor unit

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Marvin Schuster

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2y ago
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15y ago

A single alpha motor neuron together with all the all the muscle fibers it innervates is referred to as a 'motor unit'.

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9y ago

A motor neuron and all of the skeletal muscle cells it stimulates is called a motor unit.

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Q: What motor neuron and all the muscle fibers it innervates called?
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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 is a motor unit is made up of?

Motor neurons and the muscle fibers they transmit signals toA motor unit is a collection of muscle fibers that contract as a single functional unit when stimulated by an impulse from a motor neuron. The actual size can vary greatly, from many large muscle fibers in the quadriceps muscle group per motor unit to just a few muscle fibers in the muscles of the fingers per motor unit.


When a single neuron sends a strong enough impulse to a muscle that how many muscle fibers does it cause to contract?

This will depend upon the number of muscle fibers the nerve innervates. However, all fibers innervated by the nerve should contract in response to the neuronal impulse.


A motor neuron together with the muscle fiber it innervates?

it is the motor unit


A motor neuron and the muscle fibers it controls are called?

the motor unit


A motor neuron transmits signals to?

Muscle fibers


When a preganglionic neuron innervates several postganglionic neurons it is called what?

divergence


Once a motor neuron has fired all the muscle fibers in a muscle contract.?

False


Once a motor neuron has fired all the muscle fibers in a muscle contract?

False


What is a single motor neuron with all the muscles cells it innervates?

This is called a motor unit.


How do bones and muscles work to have movement?

The neuromuscular junction. A chemical called neurotransmitter is released from a neuron to stimulate the muscle fibers to contract.


How many muscle fibers stimulate one somatic motor neuron?

150