Q. 114.9( 9 Votes )
Define reflex arc.
The pathway of the reflex action is called Reflex arc. Reflex action is any spontaneous, involuntary and automatic response to a stimulus to protect us from harmful situations. For e.g. when a person touches a hot plate a sudden action leading to withdrawal of hand occurs in a certain manner, this path of manner determines the reflex arc.
Explanation: It means that reflex action is the response which is completed by a pathway called reflex arc. For example: knee jerk etc.
These 3 steps occur to generate a response with a stimulus in a reflex arc
(i) Receive the information from environment
(ii)Receive the information from various body parts.
(iii) To act accordingly through muscles and glands and generate response.
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I. Moving to the side of road when a speeding car approaches.
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