Micronutrients and Deficiencies Flashcards
6 cards from real Clinical Nutritionist CCN practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Micronutrients and Deficiencies flashcards as text
Which vitamin deficiency causes rickets in children and osteomalacia in adults?
Answer: Vitamin D
Vitamin D deficiency impairs calcium and phosphorus absorption, leading to defective bone mineralization manifesting as rickets in children and osteomalacia in adults.
A patient presents with bleeding gums, petechiae, and poor wound healing. Which nutrient deficiency is most likely?
Answer: Vitamin C (ascorbic acid)
Scurvy results from vitamin C deficiency, impairing collagen synthesis and causing fragile blood vessels, bleeding gums, and impaired wound healing.
Which mineral is required for the synthesis of thyroid hormones T3 and T4?
Answer: Iodine
Iodine is an essential component of triiodothyronine (T3) and thyroxine (T4); deficiency leads to hypothyroidism and goiter.
What is the primary function of vitamin K in the body?
Answer: Carboxylation of clotting factors II, VII, IX, and X
Vitamin K serves as a cofactor for gamma-carboxylase, which activates clotting factors and bone proteins by adding carboxyl groups to glutamate residues.
Pernicious anemia results from a deficiency of which vitamin due to lack of intrinsic factor?
Answer: Vitamin B12 (cobalamin)
Pernicious anemia is caused by impaired vitamin B12 absorption when intrinsic factor (produced by gastric parietal cells) is absent, leading to megaloblastic anemia and neurological damage.
Which micronutrient deficiency is most prevalent worldwide and commonly causes iron-deficiency anemia?
Answer: Iron
Iron deficiency is the most common nutritional deficiency globally, presenting as microcytic hypochromic anemia, fatigue, and impaired cognitive function.
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