What makes up the optic nerve?

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Test your knowledge on photoreceptors. Use flashcards and multiple-choice questions, each with hints and explanations. Prepare for your test with confidence!

Multiple Choice

What makes up the optic nerve?

Explanation:
The optic nerve is formed by the axons of retinal ganglion cells. In the retina, photoreceptors detect light and pass signals to bipolar cells, which then relay to ganglion cells. The axons of these ganglion cells bundle together and exit the eye at the optic disc to carry visual information toward the brain. The other retinal neurons (photoreceptors, bipolar cells, amacrine cells) stay inside the retina and do not form the optic nerve, so their processes do not comprise it.

The optic nerve is formed by the axons of retinal ganglion cells. In the retina, photoreceptors detect light and pass signals to bipolar cells, which then relay to ganglion cells. The axons of these ganglion cells bundle together and exit the eye at the optic disc to carry visual information toward the brain. The other retinal neurons (photoreceptors, bipolar cells, amacrine cells) stay inside the retina and do not form the optic nerve, so their processes do not comprise it.

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