In humans, what crosses to the contralateral hemisphere at the optic chiasm?A. Half of each optic nerve, the part representing the nasal half of the retinaB. Half of each optic nerve, the part representing the temporal half of the retinaC. Half of each optic nerve, originating from random parts of the retinaD. All of each optic nerve
In humans, what crosses to the contralateral hemisphere at the optic chiasm?
A. Half of each optic nerve, the part representing the nasal half of the retina
B. Half of each optic nerve, the part representing the temporal half of the retina
C. Half of each optic nerve, originating from random parts of the retina
D. All of each optic nerve
The optic nerve which connects the eyes to the brain crosses at the brain forming a structure in the shape of 'X', and this is known as the optic chiasm. The optic chiasm's placement enables the same information to be received by both the hemispheres of the visual cortex, and this occurs because of the partial crossing of the optic nerves to the other side.
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