A neuron is a nerve cell. Neurons send information to and from your brain to the rest of your body. A neuron is made up of:
- A cell body. This is where the nucleus is.
- Dendrites. The dendrites receive signals from other neurons.
- A long, thin axon. The axon is covered by a myelin sheath. The axon passes information to the next neuron or other cell in the body.
- A myelin sheath. The axons have a protective covering called myelin. Without myelin, the brain and spinal cord can't communicate with each other or with the nerves in the rest of the body.
There are different types of neurons. Sensory neurons send information from your senses (for example, touch or hearing) to your brain. Motor neurons send signals from the brain to the muscles.
Current as of: July 10, 2014
Author: Healthwise Staff
Medical Review: Adam Husney, MD - Family Medicine & Anne C. Poinier, MD - Internal Medicine & Karin M. Lindholm, DO - Neurology & Karin M. Lindholm, DO - Neurology
Public Health Alerts
Public health alerts include information about outbreaks, advisories and product recalls. Click on the links below to read the most recent alerts, or visit our Public Health Alerts web page.
FIND Services and Resources
If you are looking for health services in your community, you can use our directory to FIND hospitals, clinics, and other resources.
To learn more, visit Healthwise.org
© 1995-2014 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
Is it an emergency?
If you or someone in your care has chest pains, difficulty breathing, or severe bleeding, it could be life-threatening. Call 9-1-1 or the local emergency number immediately. If you are concerned about a possible poisoning or exposure to a toxic substance, call Poison Control now at 1-800-567-8911.