A person having prolonged bleeding after an injury might be deficient in vitamin:

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Vitamin K is essential for the synthesis of clotting factors (II, VII, IX, X) in the liver. Deficiency leads to prolonged clotting time and excessive bleeding. Vitamin A is for vision, C for collagen (scurvy causes bleeding gums but not clotting defect), D for bones. Newborns receive vitamin K injection to prevent hemorrhagic disease. Green leafy vegetables are rich sources.

A person having prolonged bleeding after an injury might be deficient in vitamin: MCQ with Answer and Explanation

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