Arkansas Esthetician Practice Exam

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What are the long threadlike fibers extending from a nerve cell called?

  1. Dendrites

  2. Axons

  3. Neurons

  4. Myelin sheaths

The correct answer is: Axons

Axons are long thread-like fibers that extend from a neuron's cell body. These structures are responsible for transmitting signals to neighboring neurons. While dendrites are also long fibers that extend from the cell body of a neuron, they are responsible for receiving signals from adjacent neurons. Neurons is a more general term used to refer to nerve cells, and myelin sheaths are fatty coverings that surround and insulate axons. Therefore, axons are the most appropriate answer as they specifically refer to the long fibers extending from a nerve cell responsible for transmitting signals.

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