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

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.

Health Professions

You might also like to view...

Just before the end of their shift, EMTs transported a young male who bystanders state "passed out" and then had a seizure. Now, an hour later, the patient has been stabilized and the physician asks the nurse if she knows what the seizure looked like. To easily answer this question, she would:

A) contact and question the bystanders. B) call the EMTs at home. C) question the patient. D) check the prehospital care report.

Health Professions

Light for dates; the newborn weighed 1274 grams: ________

Fill in the blank with correct ICD-10.

Health Professions