In lypoxygenase pathway of the arachidonic acid metabolism, which of the following products help to promote the platelets aggregation and vaso constriction: (A) C5a, (B) Thromboxane A2, (C) Leukotriene B4, (D) C1 activators
Answer is B. ref Robbins 9/e p84 Thromboxane A2 (TXA2) is a type of thromboxane that is produced by activated platelets during hemostasis and has prothrombotic propeies: it stimulates activation of new platelets as well as increases platelet aggregation