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Adrenal medulla
Pronunciation
Definition 1
The inner part of the adrenal gland (a small organ on top of each kidney). The adrenal medulla makes chemicals such as epinephrine (adrenaline) and norepinephrine (noradrenaline) which are involved in sending nerve signals. (NCI Dictionary)
Definition 2
The inner part of the adrenal gland; it synthesizes, stores and releases catecholamines. (NLM, Medical Subject Headings)
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The tissue that forms the adrenal gland. It consists of the outer adrenal cortex and the inner adrenal medulla.
