What is the long extension from a nerve cell along which signals travel?

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Study for the PLTW Medical Detectives Exam. Prepare with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your test and excel!

Multiple Choice

What is the long extension from a nerve cell along which signals travel?

Explanation:
The long extension from a nerve cell that carries signals is the axon. The axon conducts the electrical impulse, called an action potential, away from the cell body toward its terminals, where the signal can be transmitted to the next cell across the synapse. Myelin can wrap some axons to speed up this transmission, while dendrites are the structures that receive signals and the synapse is the junction where communication to the next neuron occurs. Neon is not a neural structure, and myelin is the insulating layer around the axon, not the extension itself.

The long extension from a nerve cell that carries signals is the axon. The axon conducts the electrical impulse, called an action potential, away from the cell body toward its terminals, where the signal can be transmitted to the next cell across the synapse. Myelin can wrap some axons to speed up this transmission, while dendrites are the structures that receive signals and the synapse is the junction where communication to the next neuron occurs. Neon is not a neural structure, and myelin is the insulating layer around the axon, not the extension itself.

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