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8. Blood Clotting 1. (a) The diagram below summarises some of the steps involved in blood clotting. Complete the diagram by writing in the missing words in the boxes. Thromboplastin released by damaged cells and Thrombin Fibrin (3) (b) Describe the possible effects of a blood clot forming in a coronary artery. ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... (3) (c) Name one drug that helps to prevent clotting. ..................................................................................................................................... (1) (Total 7 marks) 2. Complete the paragraph below which summarises the blood clotting process. ............................................. are cell fragments that stick to a site of damaged tissue. ............................................. is released from this area, which results in a plasma protein called ............................................. being converted to thrombin. Thrombin acts as an enzyme and catalyses the conversion of the soluble plasma protein ............................................. into long, insoluble strands of the protein .............................................. These strands form a mesh that traps ............................................. to form a blood clot. (Total 3 marks) AS Unit 1: Lifestyle, Transport, Genes and Health: Topic 1: Lifestyle health and Risk 1