This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'Retinal cells which secrete acytyl choline \nSelect and explain. \nA. Bipolar cells, B. Ganglion cells, C. H cells, D. Amacrine cells', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Important facts about signal transduction in Retina\n\nThe responses of the rods, cones and horizontal cells are hyperpolarizing.\nBipolar cells may show either hyperpolarization or depolarizationQ .\nAll these cells develop only graded local potentials, i.e., nonpropagated, decremental, does not follow all or none law. These cells do not develop action potential.\nThe only cell which develops propagated action potential is ganglion cellsQ and the response is always depolarizing. Otherwise, they remains in inactive state,\nAmacrine cells produce depolarizing potential and spikes,\nRods and cones release glutamateQ at their synapses with the bipolar cells.\nAmacrine cells0 secrete at least eight types of transmitter substances, including GABA, glycine, dopamine, acetylcholineQ and indolamine, all of which normally function as inhibitory neurotransmitters,\nThe transmitters of the bipolar cells0\xa0and horizontal cells are unclear.', 'role': 'assistant'}]