Brain does not play any direct role in reflex action. Reflex action is mainly controlled by the spinal cord. The brain function as a relay centre for transferring impulses from sensory to motor neurons in the form of cerebral reflexes Control and Coordination such as closure of eyes on exposure to flash of light and salivation in the mouth at the good smell of food. In spinal reflexes, it acts as a collection centre of information without any direct involvement in reflex action.