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medulla |
3 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Medulla \Me*dul"la\, n. [L.] 1. Marrow; pith; hence essence. [Obs.] --Milton. 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. {Medulla oblongata}. [L., oblong medulla] (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}. From WordNet r 1.6 [wn]: medulla n 1: a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers [syn: {myelin}, {myeline}] 2: lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata); "the medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart funtioning" [syn: {medulla oblongata}, {bulb}] 3: the inner part of an organ or structure in plant or animal [ant: {cortex}] From U.S. Gazetteer (1990) [gazetteer]: Medulla, FL (CDP, FIPS 43925) Location: 27.95965 N, 81.98870 W Population (1990): 3977 (1617 housing units) Area: 14.7 sq km (land), 0.0 sq km (water)
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