SUBSTANTIA
\səbstˈanʃə], \səbstˈanʃə], \s_ə_b_s_t_ˈa_n_ʃ_ə]\
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By J.H. Kenneth
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[Latin] Substance. S. alba, the white matter of the brain and cord. S. cinerea, S. grisea, the gray matter of the brain and cord. S. ferruginea, the row of pigmented nerve-cells forming the locus caeruleus of the fourth ventricle. S. gelatinosa, a substance of peculiar structure capping the posterior horn of the gray matter of the cord. S. gelatinosa centralis, gelatinous neuroglia surrounding the central canal of the cord. S. nigra, see Locus niger. S. propria, the lamina propria of the membrane tympani. S. propria cornea, the parenchyma of the cornea.
By Alexander Duane
Word of the day
SQ10,643
- A serotonin antagonist with limited antihistaminic, anticholinergic, and immunosuppressive activity.