Health Glossary

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

Asthma

A chronic respiratory disease characterized by variable symptoms and reversible or variable narrowing of the airways caused by airway inflammation…
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ATP

Adenosine triphosphate (ATP) is a molecule that stores and transfers readily usable energy within cells. Cells use ATP to power…
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B Lymphocyte

A type of lymphocyte that recognizes specific targets and can produce antibodies by differentiating into plasma cells. B lymphocytes, commonly…
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Bacteria

Single-celled microorganisms that lack a membrane-bound nucleus and can live in diverse environments, including on and inside the human body.…
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Benign

Describing a condition, growth, or tumor that is not malignant and does not have the capacity to invade surrounding tissues…
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Bilirubin

A yellow-orange substance produced mainly from the breakdown of hemoglobin and processed by the liver for elimination from the body.…
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Blood Vessel

A tubular structure that carries blood through the cardiovascular system. The major types are arteries, veins, and capillaries. Arteries generally…
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