Nerve fascicles contain mainly which structures?

Nerve fascicles contain mainly which structures?

• A. Axons
• B. Dendrites
• C. Dendritic spines
• D. Neuron cell bodies

Answer: (A)

Nerve fascicles are bundles of axons in a peripheral nerve. Each axon carries signals from a neuron’s cell body to its target, and these axons are grouped together and insulated within the fascicle. The neuron cell bodies themselves sit in dorsal root ganglia or in the CNS, not inside the fascicle, and dendrites or dendritic spines are parts of neurons that are not organized as bundles within peripheral nerve fascicles. So the main contents are axons.

Nerve fascicles are bundles of axons in a peripheral nerve. Each axon carries signals from a neuron’s cell body to its target, and these axons are grouped together and insulated within the fascicle. The neuron cell bodies themselves sit in dorsal root ganglia or in the CNS, not inside the fascicle, and dendrites or dendritic spines are parts of neurons that are not organized as bundles within peripheral nerve fascicles. So the main contents are axons.