chiasm
2
9.9
- noun
- /ˈkaɪæzəm/
- Specialized
:
quiasma
- Could be hidden in his optic chiasm.
- optic chiasm
- complex chiasms
Examples
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But the good news is it's normally pushing up against the optic chiasm.
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Damage to the chiasm can lead to significant visual field loss.
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And if we notice down here, behind the optic chiasm...
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The internal carotid and the chiasm.
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It's sitting just above this optic chiasm in this area called the suprachiasmatic nuclei.
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Optic chiasm is approximately 8 to 13 mm above the pituitary gland.
Academic text (2007) -
The left optic nerve was severely atrophic, with changes extending posteriorly toward the chiasm.
Academic text (2005) -
Our search of the English-language literature identified only one report of a venous hemangioma occurring at the optic chiasm.
Academic text (2005) -
Visual symptoms could be due to previous impingement, potential vascular shunting, or displacement of the chiasm following decompression.
Academic text (2007) -
Upwardly growing pituitary tumors impinge on the anterior notch of the chiasm at its lowest lying aspect.
Academic text (2007)
Synonyms
1
9.9
A place where two nerve paths cross like an X
An X-shaped place where two nerve fibers or chromosomes cross
Compounds
Surface Forms
Etymology
Chiasm comes from the Greek word chiasma, from chi (the Greek letter that looks like an 'X'). That's why a chiasm is the place where two parts, like nerves or blood vessels, cross in an 'X' shape.