Which layer is the location of the cell bodies of the photoreceptors (rods and cones)?

Which layer is the location of the cell bodies of the photoreceptors (rods and cones)?

• A. Outer Plexiform Layer (OPL)
• B. Outer Nuclear Layer (ONL)
• C. Inner Nuclear Layer (INL)
• D. Nerve Fiber Layer (NFL)

Answer: (B)

In the retina, the bodies of the photoreceptors (rods and cones) are located in the Outer Nuclear Layer. This layer holds the nuclei of the photoreceptors, while their outer segments extend outward toward the retinal pigment epithelium to detect light. The connection between photoreceptors and the next neurons occurs in the Outer Plexiform Layer, where the photoreceptor terminals synapse with bipolar and horizontal cells. Other layers house different cell types: the Inner Nuclear Layer contains the cell bodies of bipolar, horizontal, and amacrine cells; the Nerve Fiber Layer contains the axons of ganglion cells.

In the retina, the bodies of the photoreceptors (rods and cones) are located in the Outer Nuclear Layer. This layer holds the nuclei of the photoreceptors, while their outer segments extend outward toward the retinal pigment epithelium to detect light. The connection between photoreceptors and the next neurons occurs in the Outer Plexiform Layer, where the photoreceptor terminals synapse with bipolar and horizontal cells. Other layers house different cell types: the Inner Nuclear Layer contains the cell bodies of bipolar, horizontal, and amacrine cells; the Nerve Fiber Layer contains the axons of ganglion cells.