If the brain is a central computer that controls all the functions of the body, then the nervous system is like a network that relays messages back and forth to different parts of the body. Find out how they work in this Body Basics article.
This section has information on health problems that can affect a person's ability to see, speak, or hear.
From asthma to ulcers, learn about diseases and conditions that can affect teens. Get health information and resources for yourself or someone you care about.
Note: All information is for educational purposes only. For specific medical advice,
diagnoses, and treatment, consult your doctor.
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