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.
||Component of reflex arc
||Receives information and generates impulses.|
||Sensory neuron (Afferent)
||Carries information from the receptor to the interneurons in the spinal cord.|
||Interneuron (Association neuron)
||Processes the information and generates responses|
||Motor neuron (Efferent)
||Carries the information from the spinal cord to the effector organ.|
||Receives the information from the efferent neuron and shows the appropriate responses.|