Which vitamin is essential for the clotting of blood?
- A.Vitamin A
- B.Vitamin C
- C.Vitamin E
- D.Vitamin K
Show answer
Vitamin K, chemically phylloquinone, is needed by the liver to make prothrombin and other clotting factors, so a shortage of it makes bleeding last longer and can cause haemorrhage in a newborn; green leafy vegetables supply it and the bacteria of the large intestine make part of our requirement.
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