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Respiratory System: Gas Transport

Interactive Physiology® Quiz: Respiratory System: Gas Transport

This activity contains 10 questions.

Question 1
1 Hemoglobin is 100% saturated when how many molecules of O2 are bound to it?
End of Question 1

Question 2
2 After oxygen is unloaded from hemoglobin at the tissues, hemoglobin is called:
End of Question 2

Question 3
3 From the oxygen-hemoglobin dissociation curve, hemoglobin is 98% saturated when the partial pressure of oxygen is 100%. Is this saturation level in the lungs or in the tissues?
End of Question 3

Question 4
4 At high altitudes, the partial pressure of O2 can decrease 20 mm Hg in the lungs. How does high altitude affect the saturation of hemoglobin?
End of Question 4

Question 5
5 During exercise the partial pressure of O2 in the tissues can decrease 20%. How does exercise affect the saturation of hemoglobin?
End of Question 5

Question 6
6 Would an increase or decrease in temperature, PCO2, or BPG decrease hemoglobin's affinity for oxygen?
End of Question 6

Question 7
7 A decrease in body temperature would shift the oxygen-hemoglobin dissociation curve in which direction?
End of Question 7

Question 8
8 How is the majority of CO2 transported in the blood?
End of Question 8

Question 9
9 As bicarbonate ions move out of the red blood cell, what ions move in?
End of Question 9

Question 10
10 In the lungs, O2 loading facilitates CO2 unloading from hemoglobin. This is known as the _________ effect.
End of Question 10

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