One of the earliest symptoms of Vit. A deficiency is________________?

Related Mcqs:

1. Vit-K deficiency is indicated by___________?

   A. Low platelet count
   B. Increased prothrombin time
   C. Decreased prothrombin time
   D. None of the above

2. Deficiency of which vitamin causes glossitis dementia roughed keratotic areas on skin and gastrointestinal symptoms ?

   A. Riboflavin
   B. Pyridoxine
   C. Niacin
   D. Pantothenic acid

3. Mineral present in Vit B12 is_____________?

   A. Selenium
   B. Cobalt
   C. Iron
   D. Calcium

4. Vit B12 is absorbed in the_____________?

   A. Stomach
   B. Terminal ileum
   C. Lower jejunum
   D. Proximal ileum

5. Which of the following is not true of Vit D_______________?

   A. Its active form is calcitriol
   B. Increase calcium absorption from the intestines
   C. Its deficiency results in rickets
   D. Its decrease cause phosphate reabsorption from the kidneys

6. Which of the following are the sources of Vit C_________________?

   A. Apple
   B. Fresh green vegetables
   C. Citrus fruits
   D. Both B and C

7. Intrinsic factor for absorption of Vit B12 secreted in ______________?

   A. Duodenum
   B. Stomach
   C. Intestine
   D. Ileum

8. Which of the following tooth structure during formation is most effected due to Vit – A deficiency_____________?

   A. Enamel
   B. Dentin
   C. Cementum
   D. Periodontal Ligament

9. Which of the following is least affected in Vit – C deficiency______________?

   A. Gingival Fibres
   B. Periodontal ligament
   C. Blood Vessels of the gingiva
   D. Epithelial lining of the mucosa

10. Drugs like barbiturates precipitate symptoms of prophyria because______________?

    A. They depress ALA synthase
    B. They inhibit ALA synthase
    C. They induce heme oxygenase
    D. They inhibit heme oxygenase