Sodium channels are maximum in which part of neuron -: (A) Soma, (B) Axon hillock, (C) Dendrites, (D) Axon
Answer is B. Ans. is 'b'i.e., Axon hillocko In a motor neuron, the axon hillock and the initial segment of axon have the lowest threshold for excitation. This is because they have a much higher density of voltage gated sodium channels.