A student says that the brain is not involved at all in reflex action. What is the correct scientific correction?
Answer and explanation
Correct answer: The quick response comes through the spinal cord, but information may also reach the brain
The key idea is division of work in a reflex arc. The spinal cord provides the rapid coordinating centre for the immediate withdrawal response, allowing the body to react before conscious analysis is complete. However, nerve impulses can also travel to the brain, where the person becomes aware of pain and the event. Thus the brain is not the first centre for the quick response, but it is not completely excluded from the information pathway.
Frequently asked questions
What is the correct answer to this question?
The quick response comes through the spinal cord, but information may also reach the brain
Why is this the correct answer?
The key idea is division of work in a reflex arc. The spinal cord provides the rapid coordinating centre for the immediate withdrawal response, allowing the body to react before conscious analysis is complete. However, nerve impulses can also travel to the brain, where the person becomes aware of pain and the event. Thus the brain is not the first centre for the quick response, but it is not completely excluded from the information pathway.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Control and Coordination.
