W Hich of the Following CANNOT Prevent Blood from Clotting

Question

W hich of the following CANNOT prevent blood from clotting? A) Heparin B) Citrate (it complexes Ca²⁺) C) EDTA (it complexes Ca²⁺) D) Antithrom bin III E) Tissue thromboplastin

Accepted Answer

Tissue thromboplastin (also known as tissue factor) is a substance that initiates the extrinsic pathway of blood coagulation, thus promoting clot formation rather than preventing it. Heparin, citrate, EDTA, and antithrombin III all act to inhibit or prevent blood clotting through various mechanisms.