In Vitamin A deficiency, respiratory tract infection due to:: (A) Keratinization of upper epithelial cells, (B) Lack of antibody production, (C) Dysfunction of epithelial layer, (D) Defective chemotaxis
Answer is C. Vitamin A: - Role 1) Vision 2) Reproduction & growth 3) Maintenance of epithelial cell 4) Stabilization of cellular and intra Cellular membrane 5) Synthesis of glycoprotein 6) Antioxidant 7) Skin & Bone Metabolism