Uni directional flow of a nerve impulse is at: (A) Synapse, (B) Axon, (C) Dendrites, (D) Node of Ranvier
Answer is A. In the nervous system, a synapse is a structure that permits a neuron (or nerve cell) to pass an electrical or chemical signal to another neuron or to the target effector cell. Ref: guyton and hall textbook of medical physiology 12 edition page number: 675,676,677