axon → nerve fiber → fascicle → nerve)

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5 Terms

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<p>What is an Axon?</p>

What is an Axon?

The individual extension of a neuron.

2
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<p>What is a Nerve Fiber?</p>

What is a Nerve Fiber?

One axon plus its myelin sheath (if present), wrapped by endoneurium.

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What is a Fascicle?

A bundle of many nerve fibers, surrounded by perineurium.

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What is a Peripheral Nerve?

The entire nerve, made up of many fascicles, plus blood vessels, and surrounded by epineurium.

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Order the layers of a nerve structure from smallest to largest.

Axon \rightarrow Nerve fiber (with endoneurium) \rightarrow Fascicle (with perineurium) \rightarrow Peripheral nerve (with epineurium).