Which layer is the site where signals pass from photoreceptors to other retinal neurons?

Which layer is the site where signals pass from photoreceptors to other retinal neurons?

• A. Outer nuclear layer
• B. Inner plexiform layer
• C. Outer Plexiform Layer
• D. Photoreceptor layer

Answer: (C)

The signals pass from photoreceptors to other retinal neurons at the outer plexiform layer. This is the synaptic region where photoreceptors connect with bipolar and horizontal cells, initiating the processing that will be carried on by subsequent layers. The outer nuclear layer contains photoreceptor cell bodies, and the photoreceptor layer houses the phototransduction machinery in the outer segments. The inner plexiform layer is where bipolar cells connect to ganglion and amacrine cells, so the initial transfer from photoreceptors occurs specifically in the outer plexiform layer.

The signals pass from photoreceptors to other retinal neurons at the outer plexiform layer. This is the synaptic region where photoreceptors connect with bipolar and horizontal cells, initiating the processing that will be carried on by subsequent layers. The outer nuclear layer contains photoreceptor cell bodies, and the photoreceptor layer houses the phototransduction machinery in the outer segments. The inner plexiform layer is where bipolar cells connect to ganglion and amacrine cells, so the initial transfer from photoreceptors occurs specifically in the outer plexiform layer.