Question

What is reflex action? explain reflex arc

Answer 1

reflex action is a sudden and unconscious change in our environment .Path followed by reflex arc is called reflex arc.

Answer 2

Answer:  

Reflex action is the automatic non-voluntary movement that occurs as a result of a stimulus. Reflex arcs are neural pathways.  

Explanation:  

The brain and the spinal cord of organisms are responsible for reflex action. When the body receives stimulus from outside it automatically instantaneously react to it and this involuntary movement is called reflex action.

The reflex arcs are the pathways of neurons that act as carriers of the impulse prior to the latter reaching the brain. Examples of reflex actions are the involuntary movement of the leg if a small rubber hammer is hit on the knees.