The coagulation cascade is done in Roman Numerals.THere are 3 pathways the Intrinsic Pathway has factors XII,XI, IX.VIII, X,V,II, 1 THe Extrinsic pathways has factors III, IIV, X,V,II.and I. If you notice, Some factors are in both pathways. This is the 3rd pathway called the Common Pathway and has factors X,V,II, and I What are the factors in the Common Pathway 12,11,9,8 3,7 10,5,2,1

The correct answer is $10,5,2,1$.<br /><br />The coagulation cascade consists of three pathways: the Intrinsic Pathway, the Extrinsic Pathway, and the Common Pathway. The Intrinsic Pathway involves factors XII, XI, IX, VIII, X, V, II, and I. The Extrinsic Pathway involves factors III, IV, X, V, II, and I. The Common Pathway, which is shared by both the Intrinsic and Extrinsic Pathways, includes factors X, V, II, and I. Therefore, the factors in the Common Pathway are $10,5,2,1$.