PTA and Calcium Generate

Question

PTA and calcium generate
A) Thrombin
B) Vitamin K
C) Prothrombin
D) Hemophilic factor

Accepted Answer

PTA (Plasma Thromboplastin Antecedent, also known as Factor XI) and calcium are involved in the blood coagulation cascade, specifically in the activation of Factor IX, which ultimately leads to the generation of thrombin from prothrombin.