Health Glossary

Demystifying medical language. Browse or search for clear, human-centered explanations of common medical terms.

Nervous System

The nervous system is the body’s communication and control network that receives information, processes it, and coordinates responses and functions…
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Neuron

A neuron is a specialized nerve cell that receives, processes, and transmits information through electrical and chemical signals throughout the…
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NIDCD

NIDCD (National Institute on Deafness and Other Communication Disorders) is a United States federal research institute that supports and conducts…
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Nucleoside

A molecule consisting of a nitrogenous base chemically linked to a five-carbon sugar, without a phosphate group. A nucleoside consists…
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Nucleus

A membrane-bound organelle in eukaryotic cells that contains most of the cell‘s genetic material and helps regulate gene activity and…
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Nutrition

The process by which organisms obtain, use, and metabolize nutrients and other components of food needed for energy, growth, maintenance,…
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