adrenal medulla

(redirected from Medullary portion)
Also found in: Dictionary, Thesaurus, Medical.
Related to Medullary portion: medullary pyramid

adrenal medulla

[ə′drēn·əl mə′dəl·ə]
(anatomy)
The hormone-secreting chromaffin cells of the adrenal gland that produce epinephrine and norepinephrine.