What are the functional components of a reflex arc? Explain.

Explanation

Sensory Receptor: It is a sensory structure that responds to a specific stimulus.
Sensory Neuron: This neuron takes the sensory impulse to the grey (afferent) matter of the spinal cord through the dorsal root of the spinal cord.
Interneurons: One or two interneurons may serve to transmit the impulses from the sensory neuron to the motor neuron.
Motor Neuron: It transmits impulse from CNS to the effector organ.
Effector Organs: It may be muscles or gland which responds to the impulse received.
Sensory organ `rightarrow` Sensory or afferent neuron `rightarrow` Grey matter of the spinal cord `rightarrow` Intermediary or relay neuron `rightarrow` efferent or moror neuron `rightarrow` effector organ.