Question

what feature of the neuron is long and narrow and projects from the cell body?
axon
buttons
dendrites
nodes of ranvier

Explanation:

To solve this, we analyze each option:

• Axon: A long, narrow structure that projects from the neuron's cell body, transmitting electrical impulses away from the cell body.
• Buttons: Not a standard neuron structure related to this description.
• Dendrites: Branch - like structures that receive signals, not long and narrow projections from the cell body in the way described (they are more branched and shorter - relative to axons in terms of the long - narrow projection from cell body concept).
• Nodes of Ranvier: Gaps in the myelin sheath of an axon, not a structure that projects from the cell body.

So the correct option is Axon.

Answer:

A. Axon