A patient with Crohn's disease recently had his ileum removed. His doctor has monitored his vitamin B12 levels; vitamin B12 binds intrinsic factor in the stomach. Determine why levels of this vitamin are a concern
What will be an ideal response?
Vitamin B12 is particularly important in the formation of new erythrocytes and the normal functioning of the nervous system. A lack of vitamin B12 can lead to pernicious anemia and multiple nervous system problems. Vitamin B12 binds intrinsic factor, a molecule produced by the parietal cells of the stomach but absorption of this vitamin occurs in the ileum of the small intestine.
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The adrenal androgens ________.
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The primary function of the immune system is to _____. Select one:
a. filter out pathogens b. maintain fluid balance c. produce lymphocytes d. produce leukocytes