Medical Terminology / Unit 13 MedTerm 0867 short lesson, about 20 seconds
A Hormone
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The idea
A hormone is a chemical messenger released by a gland and carried in the blood to act on a distant target.
In practice
Insulin is a hormone released by the pancreas.
Where people slip
A hormone acts at a distance. That is what separates endocrine action from local action.
Your place on the trail
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