Question 5 Page 119 - Chapter 7 Class 10 - Control and Coordination

What is the role of the brain in reflex action?

Answer

Reflex action is an immediate or quick action or response .

It does not involve thinking, besides our actions do not feel like they are under our control .

And so, reflex action does not involve the brain

The process of reflex action is like  

• The stimuli is sensed by the sensory receptors and sensory neurons generate impulses.
• These impulses reach the spinal cord
• The relay neuron in the spinal cord passes signals between neurons.
• The motor neurons pass the signals for response to the organ that needs to respond to stimulus.

The information input also goes on to reach the brain . But it is not involved in reflex action.