Author Question: What ions do NOT cross the blood-brain barrier? a. H+ and Ca2+ b. H+ and HCO3- c. HCO3- and Cl- ... (Read 42 times)

Caiter2013 · **on:** Aug 20, 2018

What ions do NOT cross the blood-brain barrier?
a. H+ and Ca2+
b. H+ and HCO3-
c. HCO3- and Cl-
d. Na+ and Cl-
e. Na+ and Ca2+

Question 2

PS is an 87-year-old male admitted to the hospital for stomach pain. He has mild breathing problems and complains of fatigue and chronic stomach upset, for which he takes daily antacid. While hospitalized, a physician has determined that PS has megaloblastic anemia.Which of the following is least likely to cause PS's anemia?
a. reduced intrinsic factor production
b. lack of dietary folate intake
c. lack of dietary B12 intake
d. lack of dietary iron intake
e. GI malabsorption