Which substance prevents blood from clotting naturally within the bloodstream?

Biology Mcqs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Biology Mcqsbiology-mcqs
Published
10 Jan 2020
Last updated
28 May 2026

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Explanation

Heparin is a natural anticoagulant found in the body that inhibits blood clot formation. It helps maintain smooth blood flow by preventing unwanted coagulation. This property makes heparin useful in medical treatments to reduce the risk of clot-related complications, especially during surgeries or certain illnesses.

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