1. Rod cells detect shape and motion, and function in dim light.2. A human rod cell is about 2 microns in diameter and 100 microns long. 3. Red, on the other hand, stimulates only the red receptors and the rod cells . 4. :: The cone cells detect color but the rod cells only detect overall brightness. 5. When rod cells are in the dark, they are depolarized. 6. The human retina contains about 120 million rod cells and 6 million cone cells. 7. The retina contains two types of photosensitive cells, the rod cells and the cones. 8. Though cone cells primarily use the neurotransmitter substance acetylcholine, rod cells use a variety. 9. Like cones, rod cells have a synaptic terminal, an inner segment, and an outer segment. 10. The AII amacrine cell is a mediator of signals from rod cells under scotopic conditions.
Mobile