Match each substance involved in blood clot formation with its description or function.
-substance that converts prothrombin to thrombin in the presence of calcium ions
A)Tissue factor
B)Calcium
C)Fibrinogen
D)Prothrombin activator
E)Fibrin
F)Prothrombin
G)Vitamin K
H)Thrombin
I)Plasmin

Question

Quizplus · Accepted Answer

Prothrombin activator converts prothrombin to thrombin in the presence of calcium ions.

Answer: B 
 Calcium ions are necessary for the activation of prothrombin to thrombin.

Answer: H 
 Thrombin is the substance that converts fibrinogen to fibrin, which forms the basis of a blood clot.

Answer: F 
 Prothrombin is the inactive precursor to thrombin, which is activated by prothrombin activator in the presence of calcium ions.

Answer: E 
 Fibrin is the protein that forms the actual clot by polymerizing around platelets, red blood cells, and other clotting factors.

Answer: C 
 Fibrinogen is the soluble protein that is converted to fibrin by thrombin.

Answer: A 
 Tissue factor is a transmembrane protein that initiates the extrinsic pathway of coagulation, leading to the formation of prothrombin activator.

Answer: G 
 Vitamin K is required for the synthesis of several clotting factors, including prothrombin, and its deficiency can lead to bleeding disorders such as hemophilia.

Answer: I 
 Plasmin is a fibrinolytic enzyme that breaks down fibrin, allowing for the dissolution of the clot.

Match Each Substance Involved in Blood Clot Formation with Its