What does the outer nuclear layer contain?

What does the outer nuclear layer contain?

• A. Photoreceptor cell bodies
• B. Photoreceptor inner segments
• C. Retinal ganglion cell bodies
• D. Amacrine cells

Answer: (A)

The outer nuclear layer is where the cell bodies of the photoreceptors reside. In the retina, rods and cones—photoreceptors—have their nuclei in this layer, while their inner and outer segments extend into adjacent regions toward the inner and outer edges of the retina, respectively. The inner nuclear layer contains the cell bodies of bipolar, horizontal, and amacrine cells, and the retinal ganglion cell bodies sit in the ganglion cell layer. Amacrine cells themselves are located within the inner nuclear layer. So, the layer in question is defined by housing the somas of the photoreceptors.

The outer nuclear layer is where the cell bodies of the photoreceptors reside. In the retina, rods and cones—photoreceptors—have their nuclei in this layer, while their inner and outer segments extend into adjacent regions toward the inner and outer edges of the retina, respectively. The inner nuclear layer contains the cell bodies of bipolar, horizontal, and amacrine cells, and the retinal ganglion cell bodies sit in the ganglion cell layer. Amacrine cells themselves are located within the inner nuclear layer. So, the layer in question is defined by housing the somas of the photoreceptors.