Final answer:
During an injury, procoagulants (option 2) outnumber anticoagulants (option 2) , leading to the coagulation process where a fibrin clot is formed to stop bleeding. Procoagulants are proteins that change fibrinogen into fibrin, forming a clot, whereas anticoagulants prevent clotting beyond the injury site.
Step-by-step explanation:
When an injury occurs, procoagulants increase in concentration and become more abundant than anticoagulants; and the blood can coagulate. The process of hemostasis includes several steps to stop bleeding and includes the formation of a fibrin clot. First, vascular spasms narrow the blood vessel to reduce blood flow. Following this, platelets adhere to the injury site and release chemicals that activate more platelets, forming a platelet plug.
Platelets and coagulation factors then interact to convert fibrinogen into fibrin, creating a mesh that traps more platelets and erythrocytes, producing a stable blood clot. Coagulation factors are generally proteins that require vitamin K to become activated and function properly. Anticoagulants, on the other hand, are substances that inhibit the coagulation process to prevent excessive clotting and ensure clots only form where necessary.