Explain the mechanism of blood clotting, detailing the intri

Question

Explain the mechanism of blood clotting, detailing the intrinsic, extrinsic, and common pathways, and the role of thrombin and fibrin.

05 Feb 2025

Answer :

Word Count : 438

Blood clotting, or coagulation, is a vital physiological process that prevents excessive bleeding when a blood vessel is injured. This process involves a complex cascade of events that include the intrinsic, extrinsic, and common pathways, ultimately leading to the formation of a stable blood clot. The key components of this process are platelets, clotting factors, and proteins such as thrombin and fibrin.

The intrinsic pathway is activated when blood comes into contact with negatively charged surfaces, such as exposed collagen in a damaged blood vessel. It involves several clotting factors, including Factor XII (Hageman factor), Factor XI, Factor IX, and Factor VIII. When Factor XII is activated, it _________ __________ _____ ___ _________ _______ ________ _____ ___.
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