| 单词 | optic chiasma |
| 释义 | > as lemmasoptic chiasma optic chiasma n. the crossing or decussation of the fibres of the optic nerves at the base of the brain; the optic commissure.extracted from chiasman.optic chiasma optic chiasma n. Anatomy the X-shaped structure formed at the point below the brain where the two optic nerves cross each other. ΘΚΠ the world > life > the body > nervous system > cerebrospinal axis > brain > parts of brain > [noun] > commissure commissure1695 corpus callosum1706 optic commissure1848 optic chiasma1856 supracommissure1886 1856–7 Proc. Royal Soc. 8 9 To throw light on the relations of the fibres of the [optic] nerve to those of the opposite one in the optic chiasma or commissure. 1932 Proc. Royal Soc. B. 110 129 Electrical stimulation of the brain in the region of the optic chiasma. 1986 A. S. Romer & T. S. Parsons Vertebr. Body (ed. 6) xv. 515 Reaching the floor of the forebrain, the optic nerve fibers enter via the X-shaped optic chiasma. < as lemmas |
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