Question

How nerve impulses are transferred from one neuron to next neuron?

[Review question: Pg. No: 228]

Answer 1

Transmission of Nerve Impulse:

1. All the information from the environment are detected by the receptors located in our sense organs such as the eyes, the nose, the skin etc.
2. Information from the receptors is transmitted as electrical impulse and is received by the dendritic tips of the neuron.
3. This impulse travels from the dendrite to the cell body and then along the axon to its terminal end.
4. On reaching the axonal end, it causes the nerve endings to release a chemical (neurotransmitter) which diffuses across a synapse and starts a similar electrical impulse in the dendrites of the next neuron, then to their cell body to be carried along the axon.
5. The flow of nerve impulses from axonal end of one neuron to dendrite of another neuron through a synapse is called synaptic transmission.

Nerve impulse transmission