Question

TRUE/FALSE 13.There are two pathways contributing to hemostasis: the extrinsic and intrinsic pathways. The extrinsic pathway utilizes chemicals that are released into the bloodstream only after blood vessels have been damaged 14. The CoaguChek S instrument uses samples obtained via capillary puncture, not tubes of blood collected via venipuncture. 15.INR results accompany Protime results, not D-dimer assays. 16.Coumadin may be used to treat patients who have experienced thrombosis as well as other conditions, such as atrial fibrillation, which increase the risk for blood clot formation. 17.A diagnosis of atrial fibrillation increase the risk of unwanted blood clot formation 18. Postsurgical prophylactic treatment is provide only to patients with hemophilia

Answer 1

It is true because the blood vessels when ruptured will trigger the extrinsic and th intrinsic pathway . The Extrinsic pathway a specific way to cause the coagulation process . It Specifically requires the Tissue Factor that is the tissue thromboplastin which is , a substance "extrinsic to", or which is usually not seen circulating in our human blood vessels. Tissue Factor is only released when the vessel wall get ruptured and only when this rupture occur the glycoprotein phospholipid will het activated and helps in triggering the thrombin production to cause the stimulation of the prothrombin activator activation. This thrombin will convert fibrinogen a to monomer and finally polymerization give loose strands of fibrin . Tight blood clot occurs