This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
[{'content': 'In a neuron, graded electrogenesis occurs at \nSelect and explain. \nA. Soma - dendritic zone, B. Initial segment, C. Axon, D. Nerve ending', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Graded potentials are associated with depolarization of neuron up to threshold level,increased number of graded potential produce action potential Ref:Guyton and Hall textbook of medical physiology 12th edition,page number:675,676,677', 'role': 'assistant'}]