Question

multiple choice question
which pathway only takes about 15 seconds to form a blood clot?

alternate pathway

extrinsic pathway

intrinsic pathway

Explanation:

The extrinsic pathway of blood coagulation is known to be a rapid process, taking about 15 seconds to form a blood clot. It is triggered by tissue factor from outside the blood vessel. The alternate pathway is part of the complement system (not blood clotting timing as asked), and the intrinsic pathway is slower, taking several minutes.

Answer:

B. Extrinsic pathway