Define anemia, and give three possible causes.

Which antigens does a person with blood type A− have on the surface of his or her erythrocytes?

a. A antigens

b. B antigens

c. Rh antigens

d. Both a and c are correct.

e. All of the above

Predict the effects of each of the following on systemic arterial blood pressure:

a. The practice of 'blood doping,' which increases the number of red blood cells in the blood

Why is it important for erythrocytes to have a high surface area to volume ratio?