Question

Pernicious anemia is: 

a) A severe form of anemia most often affecting elderly adults, caused by a failure of the stomach to absorb vitamin B₁₂ and characterized by abnormally large red blood cells, gastrointestinal disturbances, and lesions of the spinal cord 

b) A form of anemia in which the capacity of the bone marrow to generate red blood cells is defective, caused by a bone marrow disease or exposure to toxic agents, such as radiation, chemicals, or drugs 

c) Anemia characterized by a decrease in the concentration of corpuscular hemoglobin 

d) All of the above

Answer 1

a) A severe form of anemia most often affecting elderly adults, caused by a failure of the stomach to absorb vitamin B₁₂ and characterized by abnormally large red blood cells, gastrointestinal disturbances, and lesions of the spinal cord