Question:
Increased $CO_2$ concentration in blood primarily stimulates:
Increased $CO_2$ concentration in blood primarily stimulates:
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Chemoreceptors are chemical sensors for blood gas monitoring.
Updated On: Jun 6, 2026
- Inspiratory centre
- Expiratory centre
- Chemoreceptors
- Baroreceptors
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The Correct Option is C
Solution and Explanation
Step 1: Concept
Respiratory regulation.
Step 2: Meaning
The mechanism by which the body monitors blood gas levels.
Step 3: Analysis
Chemoreceptors located in the carotid body and aortic arch are highly sensitive to increases in $CO_2$ and $H^+$ concentration, which then signal the respiratory centers to adjust breathing.
Step 4: Conclusion
Chemoreceptors are the primary receptors stimulated by elevated $CO_2$.
Final Answer: (C)
Respiratory regulation.
Step 2: Meaning
The mechanism by which the body monitors blood gas levels.
Step 3: Analysis
Chemoreceptors located in the carotid body and aortic arch are highly sensitive to increases in $CO_2$ and $H^+$ concentration, which then signal the respiratory centers to adjust breathing.
Step 4: Conclusion
Chemoreceptors are the primary receptors stimulated by elevated $CO_2$.
Final Answer: (C)
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