BIO NMDCAT Receptors

nmdcat.online July 7, 2026

A characteristic anatomical feature of the optic chiasm is the

A. Termination of all optic nerve fibers

B. Synthesis of visual pigments

C. Decussation of medial (nasal) retinal fibers

✓

D. Synapse between first and second-order neurons

📝 Explanation

At the optic chiasm, fibers from the medial (nasal) half of each retina cross over (decussate) to the opposite side of the brain, while lateral (temporal) fibers stay on the same side.

📖 Additional Information

Termination of all optic nerve fibers
Synthesis of visual pigments
Decussation of medial (nasal) retinal fibers
Synapse between first and second-order neurons

At the optic chiasm, fibers from the medial (nasal) half of each retina cross over (decussate) to the opposite side of the brain, while lateral (temporal) fibers stay on the same side.

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