Which of the following coagulation pathways is activated in response to tissue injury, involving the interaction of tissue factor and factor VIIa?

A Intrinsic pathway
B Extrinsic pathway ✓
C Common pathway
D Fibrinolytic pathway

Explanation

The extrinsic pathway is activated in response to tissue injury, involving the interaction of tissue factor and factor VIIa, which ultimately leads to the formation of a blood clot.

Mnemonic

EXTRINSIC = EXternal TRIGger INSIDE Coagulation

Source

Guyton and Hall Textbook of Medical Physiology
Hematology Hematology: Coagulation Disorders Hematology: Coagulation Disorders Easy MEDICAL Confidence: high