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Medulla   Listen
noun
Medulla  n.  
1.
Marrow; pith; hence, essence. (Obs.)
2.
(Anat.) The marrow of bones; the deep or inner portion of an organ or part; as, the medulla, or medullary substance, of the kidney; specifically, the medula oblongata.
3.
(Bot.) A soft tissue, occupying the center of the stem or branch of a plant; pith.
4.
See medulla oblongata.
Medulla oblongata. (Anat.), the posterior part of the brain connected with the spinal cord. It includes all the hindbrain except the cerebellum and pons, and from it a large part of the cranial nerves arise. It controls very largely respiration, circulation, swallowing, and other functions, and is the most vital part of the brain; called also bulb of the spinal cord. See Brain.





Collaborative International Dictionary of English 0.48


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Words linked to "Medulla" :   myelin sheath, medullary sheath, cortex, bulb, neural structure, brain-stem, adrenal medulla, fat, medulla spinalis, brain stem, plant tissue, medulla oblongata, myelin, brainstem, medullary, myeline


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