Why are the Reflex Actions Controlled by the Spinal Cord and not the Brain?

Answer: Reflex actions sometimes require a basic neural route known as a reflex arc. A reflex arc stimulates the Receptors. The impulses are subsequently sent via a sensory neuron to the spinal cord, where they are relayed to a motor neuron.

In reaction to stimuli, the reflex action is an automatic and practically immediate movement. The majority of sensory neurons in invertebrates do not go straight to the brain but instead form synapses in the spinal cord. The spinal cord serves as the primary reflex center. The spinal cord provides a connection between the spinal nerves and the brain.