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Select all that apply: Pernicious anemia is most common in older people. Which choice lists the correct relationships among the factors that cause this disorder? The reduced secretion of intrinsic factor means that vitamin B12 cannot be absorbed, and macrocytes are produced instead of erythrocytes.The reduced synthesis of vitamin B12 results in the production of too many platelets.The reduced secretion of intrinsic factor means that vitamin B12 cannot be absorbed, and too many red blood cells are destroyed.The increased secretion of intrinsic factor results in excess levels of vitamin B12, which causes the synthesis of too many red blood cells for the spleen to break down.

Question
Select all that apply:
 
Pernicious anemia is most common in older people. Which choice lists the correct relationships among the factors that cause this disorder?
 

The reduced secretion of intrinsic factor means that vitamin B12 cannot be absorbed, and macrocytes are produced instead of erythrocytes.
The reduced synthesis of vitamin B12 results in the production of too many platelets.
The reduced secretion of intrinsic factor means that vitamin B12 cannot be absorbed, and too many red blood cells are destroyed.
The increased secretion of intrinsic factor results in excess levels of vitamin B12, which causes the synthesis of too many red blood cells for the spleen to break down.
check_circleAnswer
Step 1

Anemia is a medical condition in which the body is abnormally low in red blood cell count. Pernicious anemia results from the inability to absorb vitamin B-12 from the body to make enough healthy red blood cells.

Step 2

Pernicious anemia results from a lack of a protein called IF or intrinsic factor which is necessary to absorb vitamin B12 from the stomach. In this disease, the body produces antibodies against IF and hence these cells are destroyed. So, the body cannot absorb vitamin B-12. In response to the deficiency...

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