Relating to the inner core of the adrenal gland, which produces adrenaline and noradrenaline.
From 'adreno-' (adrenal gland) + 'medullary' (from Latin 'medulla,' meaning marrow or inner part).
Unlike the adrenal cortex (outer layer), the adrenomedullary region is controlled by nerves, not hormones—when danger strikes, your nervous system directly tells this tiny region to flood your bloodstream with adrenaline.
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