Problemas
18. Prothrombin is converted to thrombin during the __ 1. intrinsic pathway 2. extrinsic pathway 3. common pathway 4. formation of the platelet plug
Roztwór
Anaís
experto · Tutor durante 3 años
4.1
(281 Votos)
Respuesta
The correct answer is '3. common pathway'.
Explicación
## Step 1Prothrombin, also known as factor II, is a protein that plays a crucial role in blood clotting. It is converted into thrombin, which is a key enzyme in the clotting process.## Step 2The conversion of prothrombin to thrombin occurs in the common pathway of the coagulation cascade. The coagulation cascade is a series of events that lead to the formation of a blood clot. It consists of three main pathways: the intrinsic pathway, the extrinsic pathway, and the common pathway.## Step 3The intrinsic pathway is activated by damage to the blood vessel's inner lining. The extrinsic pathway is activated by external trauma that causes blood to escape from the vessel. The common pathway is the final stage of the coagulation cascade, where the intrinsic and extrinsic pathways converge.## Step 4The formation of the platelet plug is a separate process that occurs before the coagulation cascade. It involves the activation of platelets, which adhere to the site of injury and form a plug to prevent further bleeding.