Author Question: When Hb saturation with O2 is high, less carbon dioxide is carried in the blood. What is this ... (Read 45 times)

wenmo · **on:** Jul 16, 2018

When Hb saturation with O2 is high, less carbon dioxide is carried in the blood. What is this rela-tionship called?

a. Bohr effect
b. Chloride shift
c. Dissociation constant
d. Haldane effect

Question 2

The conversion of HbO2 to deoxygenated Hb does which of the following? 1. Decreases blood carbon dioxide content. 2. Enhances carbon dioxide loading on Hb. 3. Helps buffer H+ ions.

a. 2 and 3 only
b. 1 and 2 only
c. 3 only
d. 1, 2, and 3

tofugiraffe · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: D
Figure 12-14 shows that oxyhemoglobin saturation also affects the position of the carbon dioxide dissociation curve. The influence of oxyhemoglobin saturation on carbon dioxide dissociation is called the Haldane effect.

Answer to Question 2

ANS: A
Figure 12-14 shows that oxyhemoglobin saturation also affects the position of the CO2 dissocia-tion curve. The influence of oxyhemoglobin saturation on CO2 dissociation is called the Haldane effect. As previously explained, this phenomenon is a result of changes in the affinity of hemo-globin for CO2, which occur as a result of its buffering of H+ ions.