Which one of the following depicts the correct circuit of a reflex are ........

General Science (NDA) Biology

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Which one of the following depicts the correct circuit of a reflex are?

Effector-sensory neuron-spinal cordmotor neuron –receptor

Receptor-sensory neuron-spinal cordmotor neuron – effector

Receptor-sensory neuron-brain-motor neuron-effector

Sensory neuron-receptor-braineffector- motor neuron

Explanation:

Option(2) , The reflex arc is a type of neural circuit that begins with a sensory neuron at a receptor and ends with a motor neuron at an effector. Sensory neuron sends electrical impulses to a relay neuron, which is located in the spinal cord of the CNS. Relay neurons connect sensory neurons to motor neurons. In this reflex action brain is not involved.