Question

Respiratory centres that control the rate and depth of breathing are located in ________

• A. medulla oblongata only
• B. cerebrum only
• C. cerebellum and pons
• D. pons and medulla oblongata

Hint:

Respiration control: Medulla $\rightarrow$ Rhythm Pons $\rightarrow$ Regulation

Answer 1

The Correct Option is D

Concept: Respiratory control is regulated by centres located in the brainstem.
• Medulla oblongata: Controls basic rhythm of breathing
• Pons: Modifies rate and depth of breathing

Step 1: Identify control centres.
Both pons and medulla are involved in respiration.

Step 2: Function of each.
• Medulla: Generates respiratory rhythm
• Pons: Fine-tunes breathing pattern

Step 3: Analyze options.
• (A) Only medulla: Incomplete
• (B) Cerebrum: Not primary respiratory control
• (C) Cerebellum: Not involved
• (D) Pons and medulla: Correct

Step 4: Conclusion.
Thus, respiratory centres are located in pons and medulla oblongata. Final Answer: Option (D)