Question 1.
Which of the following conditions will result in vasodilation ofthe arterioles?
A. increase H+; decrease O2; increase CO2
B. decrease H+; decrease O2; increase CO2
C. increase H+; increase CO2; increase O2
D. decrease H+; increase O2; increase CO2
Question 2
Which of these is demonstrated by the oxygen-hemoglobindissociation curve?
| | The greater the PO2 of the blood, the greater the dissociationof O2 from hemoglobin? |
| | At normal resting systemic arterial PO2, hemoglobin is almost100% saturated with oxygen |
| | At normal resting systemic venous PO2, only about 75% of thehemoglobin is in the form of deoxyhemoglobin |
| | More additional oxygen binds to hemoglobin when going from a PO2of 60 to 80 mm Hg, than is added when going from a PO2 of 20 to 40mmHg |
| | As PO2 increases, the saturation of hemoglobin with oxygenincreases linearly |
