Answer: medullas

AnswerCrossword Clue
MEDULLASParts of certain stems
MEDULLASNerve centers
MEDULLASHindmost brain parts
medullasthe pith of plants
medullasthe lowest or hindmost part of the brain, continuous with the spinal cord; the medulla oblongata
medullasthe soft, marrowlike center of an organ, as the kidney or adrenal gland