Question

write down major steps involved in the extrinsic blood clotting​

Answer 1

Extrinsic Blood Clotting

• Extrinsic pathway of clotting is a part of the coagulation cascade process during hemostasis.
• Extrinsic pathway or tissue factor pathway is the clotting process activated by a protein tissue factor, the tissue thromboplastin, which is extrinsic to the blood.  

Explanation:

Major steps of extrinsic pathway :

1. A traumatic injury to tissues surrounding a blood vessel
2. The extravascular cells, extrinsic to the bloodstream, upon a traumatic injury, releases factor III or thromboplastin.  
3. This is then converted to factor VII, which in combination with factor III forms an enzyme complex.  
4. Enzyme complex activates factor X
5. Factor X initiates the common pathway