Biology in Practice Quiz 8.pdf - 258 Award 1.00 point When humans climb to high altitudes they may hyperventilate Which of the following is NOT a

Biology in Practice Quiz 8.pdf - 258 Award 1.00 point When...

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258.Award: 1.00 pointWhen humans climb to high altitudes they may hyperventilate. Which of the following is NOT aconsequence of hyperventilation? Partial pressure of carbon dioxide in the lung falls.The pH of the blood may fall and become alkalotic.Breathing rate increases.Partial pressure of oxygen in the lung increases.Blood haemoglobin concentration increases as ventilation increases.When humans climb to high altitudes they increase their rate of breathing; that is, theyhyperventilate in order to increase the PO2in their lungs, thereby facilitating gas exchange. Apotentially detrimental side effect of hyperventilation is the concomitant reduction in the partialpressure of CO2in the lungs, which results in an increase in blood pH (i.e. the blood becomesalkalotic). Haemoglobin levels cannot respond so quickly, although over time blood haemoglobinlevel, cardiac output, etc may increase with acclimitisation References Multiple Choice Section: Animals in extreme environments

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