Blood doping (using injected substances to artificially enhance performance) is illegal in many sports.

two substances used are erythropoietin and hypoxia-inducible factors (hif).

one of the actions of hif is to increase formation of new blood vessels (angiogenesis).

explain how administering erythropoietin can increase performance and how hif can increase performance through angiogenesis.

Aclient with pernicious anemia asks why she must take vitamin b12 injections for the rest of her life. what is the nurse's best response? a. "the reason for your vitamin deficiency is an inability to absorb the vitamin because the stomach is not producing sutficient acid." b. "the reason for your vitamin deficiency is an inability to absorb the vitamin because the stomach is not producing sufficient intrinsic factor." c. "the reason for your vitamin deficiency is an excessive excretion of the vitamin because of kidney dysfunction." d. "the reason for your vitamin deficiency is an increased requirement for the vitamin because of rapid red blood cell production."