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sympathoblast sym·pa·tho·blast (sĭm’pə-thō-blāst’)
A primitive cell derived from neuroglia of the neural crest that develops into a cell of the adrenal medulla. Also called sympathetoblast, sympathicoblast.


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  • Sympathoblastoma

    sympathoblastoma sym·pa·tho·blas·to·ma (sĭm’pə-thō-blā-stō’mə) n. A completely undifferentiated malignant tumor made up of sympathoblasts and originating from embryonal cells of the sympathetic nervous system. Also called sympathetoblastoma, sympathicoblastoma, sympathicogonioma, sympathogonioma.

  • Sympathogonia

    sympathogonia sym·pa·tho·go·ni·a (sĭm’pə-thō-gō’nē-ə) pl.n. The completely undifferentiated cells that develop into cells of the sympathetic nervous system.

  • Sympathogonioma

    sympathogonioma sym·pa·tho·go·ni·o·ma (sĭm’pə-thō-gō’nē-ō’mə) n. See sympathoblastoma.

  • Sympatholytic

    [sim-puh-thoh-lit-ik] /ˌsɪm pə θoʊˈlɪt ɪk/ adjective, Physiology, Pharmacology. 1. opposing the effects of stimulation of the sympathetic nervous system. sympatholytic /ˌsɪmpəθəʊˈlɪtɪk/ adjective 1. inhibiting or antagonistic to nerve impulses of the sympathetic nervous system of or relating to such inhibition noun 2. a sympatholytic drug Compare sympathomimetic sympatholytic sym·pa·tho·lyt·ic (sĭm’pə-thō-lĭt’ĭk) adj. Opposing the physiological effects […]

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