When stimulated, neurons can generate excitement and transmit it to other neurons. This excitement is called nerve impulse. Neurons transmit nerve impulses in a certain direction. Each neuron may have many dendrites, but only one axon. Dendrites transmit nerve impulses to cell bodies, and axons transmit impulses from cell bodies. So the transmission direction of nerve impulse is dendrite → cell body → axon → next neuron.

So, the answer is: stimulation; Dendrites; axon