axon → nerve fiber → fascicle → nerve
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10 Terms
What is an axon?
The long process of a single neuron.
Define a nerve fiber.
One axon plus its myelin sheath and coverings.
What is a fascicle?
A bundle of many nerve fibers, wrapped in perineurium.
Describe a peripheral nerve.
The whole nerve, made of multiple fascicles, plus blood vessels and connective tissue (epineurium).
Arrange the following from smallest to largest: Axon, Peripheral nerve, Nerve fiber, Fascicle.
The hierarchy from smallest to largest is:
- Axon
- Nerve fiber
- Fascicle
- Peripheral nerve
What is an axon?
The individual extension of a single neuron.
Define a nerve fiber.
One axon plus its myelin sheath (if present), wrapped by endoneurium.
What is a fascicle?
A bundle of many nerve fibers, surrounded by perineurium.
Describe a peripheral nerve.
The entire nerve, made of multiple fascicles, plus blood vessels, surrounded by epineurium.
Arrange the following from smallest to largest, including their connective tissue layers: Axon, Peripheral nerve, Nerve fiber, Fascicle.
The hierarchy from smallest to largest is:
- Axon
- Nerve fiber (with endoneurium)
- Fascicle (with perineurium)
- Peripheral nerve (with epineurium)