At the Optic Chiasm

Question

At the optic chiasm,
A) axons from the medial halves of each retina cross.
B) axons from the lateral halves of each retina cross.
C) axons from the retinae synapse on those from the other half.
D) the olfactory nerve crosses to the opposite side of the brain.
E) the optic nerve enters the cerebellum.

Accepted Answer

At the optic chiasm, axons from the medial (inner) halves of each retina cross to the opposite side of the brain. This means that visual information from the left side of each eye is sent to the right side of the brain, and vice versa. Axons from the lateral (outer) halves of each retina do not cross and remain on the same side of the brain.