Multiple choice

The information acquired at the dendritic tip of a nerve cell sets off a chemical reaction. What type of impulses does this chemical reaction create?

  1. Physical

  2. Electrical

  3. Mechanical

  4. Chemical

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The information acquired at the end of dendritic tip of a nerve cell sets off a chemical reaction that creates an electrical impulse. This impulse travels from the dendrite to the cell body, and then along the axon to its end. At the end of axon, the electrical impulse sets off the release of some chemicals. These chemicals across the gap start a similar electrical impulse in a dendrite of the next neuron. Therefore, only two types of impulses are involved in processing nerve signal viz. electrical and chemical. Physical (touch) or mechanical (machines) impulses cannot be involved in the transmission of impulse at the end of axon or throughout the nerve conduction.