| 词汇 | chiasma |
| 释义 | chiasma noun[ Cusually singular ] anatomy specializeduk /kaɪˈæz.mə/ us /kaɪˈæz.mə/pluralchiasmata an instance of two structures in the body crossing and forming an X, especially the optic chiasma(= the connection in the brain between the two optic nerves that connect the eyes to the brain and allow you to see with both eyes together): Most of its fibres have their origins in the retina, and reach the chiasma through the optic nerves. This is a further study on chiasma distribution in the human male. These axons fail to cross over in the chiasma and head for the wrong side of the brain. Visual impulses from the retina pass through the optic nerve, optic chiasma, optic tract, lateral geniculate body and optic radiation to the visual cortex of the occipital lobe. The eye & surrounding area beadily beetling canthus chiasm ciliary compound eye eyeball eyelid glassy macula macula lutea macular monobrow oculomotor optic nerve suborbital superciliary supraoptic supraorbital tear duct You can also find related words, phrases, and synonyms in the topics: The brain & nervous system Synonymchiasm |
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