question_answer 17)

What is the role of the brain in reflex action?

Answer:

Reflex actions are simplest responses to an external stimulus which are not under our control and are controlled by the spinal cord. For example, when we touch a hot plate, we immediately remove our hand without thinking. Though, spinal reflexes are produced in the spinal cord, but the message of reflex action taken also goes on to reach the brain. For any reflex action, various organs are involved, though the message to react is send by the spinal cord, but the activity of various organs to carryout the response is coordinated by brain. Note Besides, some reflexes involve brain, rather than spinal cord only. They are called spinal reflexes. The contraction of pupil of our eye automatically in the presence of bright light is an example of cerebral reflex.