- A Medullary rhythm/respiratory centre
- B Carotid body chemoreceptors
- C Aortic body chemoreceptors
- D Pneumotaxic centre in the pons
Correct answer: A. Medullary rhythm/respiratory centre
Explanation: The medullary respiratory rhythm centre generates the basic rhythm of breathing, while the pneumotaxic centre in the pons can moderate the duration and depth of breaths.
Concept context
The mechanics of breathing, lung volumes, gas transport in blood, the Bohr effect, and respiratory regulation.