The last vision-processing step before signals are sent to the brain is in the _____
A)amacrine cells.
B)bipolar cells.
C)horizontal cells.
D)ganglion cells.

Question

Quizplus · Accepted Answer

The signals from photoreceptor cells (rods and cones) in the retina are transmitted to bipolar cells, which then transmit the signal to ganglion cells. The ganglion cells are the final stage of processing before the visual signals are sent via the optic nerve to the brain. Therefore, D (ganglion cells) is the correct choice. Amacrine and horizontal cells are intermediate cells that modify and refine the signals between photoreceptor cells and bipolar cells but are not the final processing step.

The Last Vision-Processing Step Before Signals Are Sent to the Brain