Answer :

(A) Reflex action is the simplest form of response of nervous system. It is an automatic process that occurs when we touch a hot pan, cut or hand through knife, yawning, etc.

Example- When we touch a hot pan.


The afferent neuron take the information from body to the central nervous system.


The brain processes the information.


The efferent neurons then take the information from the brain to the body back in the form of muscle contraction, so that we can move our hand away from hot pan.


Diagram showing reflex arc. Reflex arc is the neural pathway involved in reflex action.



(B)



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