Ques. 1AIPMT 2002
Continuous bleeding from an injured part of body is due to deficiency of
- vitamin A
- vitamin B
- vitamin K
- vitamin E.
Answer
(3) vitamin K
Solution
As per NCERT, clotting of blood involves a cascade of clotting factors; prothrombin is converted into thrombin, which converts fibrinogen into fibrin threads.
∵ Vitamin K is required in the liver for the synthesis of prothrombin and other clotting factors.
⇒ In vitamin K deficiency, blood does not clot properly and bleeding from an injury continues.
∴ Continuous bleeding is due to deficiency of vitamin K.
Answer: (3)
Out of syllabus