SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a 100 mm Hg
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b 95 mm Hg
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Either A or B
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None of the above
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Detailed explanation-1: -Po2 in oxygenated blood (95 mm Hg)>Po2 in body cells (40 mmHg) and Pco2 in oxygenated blood is 40 mm Hg of <Pco2 in body cells (45 mm Hg) during exchange of gases between blood and tissue. Therefore, in systematic arteries, Po2 is 95 mm Hg and Pco2 is 40 mm Hg.
Detailed explanation-2: -1) PO2 in alveoli is 104 mmHg vs. 40 mmHg for the deoxygenated blood of the pulmonary arteries.
Detailed explanation-3: -FiO2 is the fraction of inspired oxygen. PCO2 is the carbon dioxide partial pressure in arteries, which in normal physiological conditions is about 40 to 45 mmHg, and the RQ (respiratory quotient).
Detailed explanation-4: -In the pulmonary “wedge” samples of blood, the following mean values were found: Po2, 17.65 kPa (132.2 mmHg); Pco2, 3.10 kPa (23.2 mmHg); pH 7.47. An explanation of these findings is considered.
Detailed explanation-5: -1) the partial pressure of oxygen in systemic venous blood is normally 40 mm Hg.