Which protein is essential for clot formation by providing a fibrous mesh that traps cells?

Which protein is essential for clot formation by providing a fibrous mesh that traps cells?

• A. Hemostasis
• B. Antibody production
• C. Phagocytosis
• D. Complement fixation

Answer: (A)

The key idea is how a clot forms and why it stays in place. When bleeding occurs, the body activates hemostasis, a coordinated process that includes constricting vessels, forming a platelet plug, and triggering the coagulation cascade. This cascade converts fibrinogen into fibrin, and fibrin forms a fibrous mesh that traps platelets and red blood cells to stabilize the clot. Among the options, hemostasis best fits because it describes the whole mechanism that ultimately produces the fibrin mesh essential for a clot. The other choices relate to immune functions that do not create this fibrin network. In short, the fibrous clot mesh arises through the coagulation steps within hemostasis, so the process itself is the most appropriate answer.

The key idea is how a clot forms and why it stays in place. When bleeding occurs, the body activates hemostasis, a coordinated process that includes constricting vessels, forming a platelet plug, and triggering the coagulation cascade. This cascade converts fibrinogen into fibrin, and fibrin forms a fibrous mesh that traps platelets and red blood cells to stabilize the clot. Among the options, hemostasis best fits because it describes the whole mechanism that ultimately produces the fibrin mesh essential for a clot. The other choices relate to immune functions that do not create this fibrin network. In short, the fibrous clot mesh arises through the coagulation steps within hemostasis, so the process itself is the most appropriate answer.