1.

What is reflex arc? Write the components of reflex arc and their functions.

Answer»

1. The structural and functional unit that carries out reflex action is called a reflex arc. 

2. It consists of five components. 

3. They are receptor, a sensory nerve, a association neuron, a motor nerve and an effector organ.

SI. No.Component of reflex arcFunctions
1.ReceptorReceives information and generates impulses.
2.Sensory neuron (Afferent)Carries information from the receptor to the interneurons in the spinal cord.
3.Interneuron (Association neuron)Processes the information and generates responses
4.Motor neuron (Efferent)Carries the information from the spinal cord to the effector organ.
5.Effector organReceives the information from the efferent neuron and shows the appropriate responses.


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