MEDULLA

refers to the central region or middle of an organ, such as the medulla of the kidney.

MEDULLA: "The middle or center of an organ is called the medulla."
Cite this page: N., Pam M.S., "MEDULLA," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/medulla/ (accessed December 13, 2019).
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