optic chiasm

chiasm

[ki´azm] a decussation or X-shaped crossing.optic chiasm a structure in the forebrain formed by the decussation of fibers of the optic nerve from each half of each retina.

op·tic chi·asm

[TA] a flattened quadrangular body in front of the tuber cinereum and infundibulum, the point of crossing or decussation of the axons of the optic nerves. Axons from the nasal retina cross to the opposite side, whereas axons from the temporal retina run directly caudal without crossing; some pass transversely on the posterior surface between the two optic tracts, and others pass transversely on the anterior surface between the two optic nerves. Synonym(s): chiasma opticum [TA], optic decussation

op·tic chi·asm

(op'tik kī'azm) [TA] A flattened quadrangular body in front of the tuber cinereum and infundibulum, the point of crossing or decussation of the fibers of the optic nerves; most of the fibers cross to the opposite side, some run directly forward on each side without crossing, some pass transversely on the posterior surface between the two optic tracts and others pass transversely on the anterior surface between the two optic nerves.
Synonym(s): optic decussation.

op·tic chi·asm

(op'tik kī'azm) [TA] A flattened quadrangular body in front of the tuber cinereum and infundibulum, the point of crossing or decussation of the fibers of the optic nerves.
Synonym(s): optic decussation

optic chiasm

optic chiasm

chiasm

op·tic chi·asm

op·tic chi·asm

op·tic chi·asm

optic chiasm

Synonyms for optic chiasm

noun the crossing of the optic nerves from the two eyes at the base of the brain

Synonyms

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