How would an increase in the concentration of calcium ion in the blood affect the process of hemostasis?
A) Platelet plugs would fail to form.
B) Coagulation would proceed more rapidly.
C) Coagulation would proceed more slowly.
D) Retraction would occur prematurely.
E) Fibrinolysis would occur more quickly.

Question

Quizplus · Accepted Answer

An increase in calcium ion concentration in the blood would facilitate the activation of coagulation factors and thus accelerate the formation of fibrin clots. Calcium is essential for the enzyme activity of several clotting factors, including prothrombin and factor X. Therefore, an increase in calcium would promote the conversion of prothrombin to thrombin, which in turn would catalyze the conversion of fibrinogen to fibrin strands, leading to the formation of stable clots.

How Would an Increase in the Concentration of Calcium Ion