What role does the Bohr effect play in O2 transport?
a. Describes the effect of varying enzyme levels on Hb and O2 affinity.
b. Diminishes tissue oxygenation due to electrolyte imbalances.
c. Enhances O2 delivery to tissues and O2 pickup at lungs.
d. Explains the effect that O2 levels have on carbon dioxide transport.
Q. 2 Compared to normal levels, a shift in the HbO2 curve to the right has which of the following ef-fects?
1. The affinity of Hb for O2 decreases.
2. The Hb saturation for a given PO2 falls.
3. The Hb saturation for a given PO2 rises.
a. 1 only
b. 1 and 2 only
c. 2 and 3 only
d. 1, 2, and 3
Q. 3 What is the effect of an elevated intracellular 2,3-DPG concentration?
a. Decreases the availability of O2 to the tis-sues.
b. Increases the affinity of Hb for O2.
c. Increases the availability of O2 to the tis-sues.
d. Shifts the HbO2 dissociation curve to the left.
Q. 4 What is the approximate normal CaO2 CO2 in a healthy adult at rest?
a. 5 ml/dl
b. 15 ml/dl
c. 20 ml/dl
d. 250 ml/dl
Q. 5 Given the following blood parameters, compute the total O2 content (dissolved + HbO2) of the blood in ml/dl: Hb = 16; PO2 = 625 Hg; SO2 = 100.
a. 17.8 ml/dl
b. 19.4 ml/dl
c. 21.4 ml/dl
d. 23.3 ml/dl
Q. 6 A patient has a whole-body O2 consumption of 320 ml/min and a measured CaO2 CO2 of 8 ml/dl. What is the cardiac output?
a. 3.2 L/min
b. 4.0 L/min
c. 5.0 L/min
d. 7.0 L/min
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