During strenuous exercise, skeletal muscle temperature and carbon dioxide production increase. What effect does this have on oxygen release from haemoglobin?
Correct answer: A. Haemoglobin releases more oxygen to the tissues
- A. Haemoglobin releases more oxygen to the tissues
- B. Haemoglobin binds oxygen more strongly in the tissues
- C. Haemoglobin releases less oxygen to the tissues
- D. Haemoglobin stops carrying oxygen in the blood
Explanation
Increased temperature and carbon dioxide reduce haemoglobin's affinity for oxygen, shifting the oxyhaemoglobin dissociation curve to the right. This helps active tissues receive more oxygen. The change is not a loss of oxygen-carrying ability or complete cessation of transport.
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About Respiratory System
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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