A patient can think and speak, but automatic breathing is seriously affected. Which part is most suspicious?
Answer and explanation
Correct answer: Medulla
The cerebrum is chiefly associated with conscious activities such as thinking, memory and voluntary speech, so preserved thinking and speaking suggest that it is not the main affected part. Breathing is an involuntary, vital activity regulated by centres in the brainstem, especially the medulla. Thus option B is most suitable. The cerebellum coordinates movement and balance, while the tongue is an effector, not the main respiratory control centre.
Frequently asked questions
What is the correct answer to this question?
Medulla
Why is this the correct answer?
The cerebrum is chiefly associated with conscious activities such as thinking, memory and voluntary speech, so preserved thinking and speaking suggest that it is not the main affected part. Breathing is an involuntary, vital activity regulated by centres in the brainstem, especially the medulla. Thus option B is most suitable. The cerebellum coordinates movement and balance, while the tongue is an effector, not the main respiratory control centre.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Control and Coordination. Topic: Reflex action.
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