Question

Complete the flowchart showing how blood clots.

A Thromboplastin Thrombin Vit K, \( Ca ^{2+} \) B C Blood clot

• A. A – Prothrombin; B – Fibrinogen; C - Fibrin
• B. A – Prothrombin; B – Fibrin; C - Fibrinogen

Answer 1

The correct option is A A – Prothrombin; B – Fibrinogen; C - Fibrin

• Blood clotting is a defence mechanism to prevent the loss of blood through wounds.
• Tissues of the wounded part degenerate to form the enzyme thromboplastin.
• Thromboplastin converts prothrombin in the plasma to thrombin.
• Thrombin converts the fibrinogen in the plasma to fibrin.