A patient has metabolic acidosis with a low blood pH. Which effect does this condition have on oxygen release from haemoglobin?
Correct answer: A. It promotes oxygen release to tissues
- A. It promotes oxygen release to tissues
- B. It prevents oxygen release to tissues
- C. It increases haemoglobin production immediately
- D. It causes oxygen to bind more strongly
Explanation
A fall in pH shifts the oxyhaemoglobin dissociation curve to the right, allowing haemoglobin to release more oxygen to metabolically active tissues. This is part of the Bohr effect and does not immediately increase red blood cell production.
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The respiratory system includes the air passages, lungs, pleura, alveoli and the mechanics of breathing. It explains pulmonary ventilation, gas exchange, oxygen and carbon dioxide transport, regulation of breathing, and the difference between external respiration in the lungs and internal respiration in body tissues.
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