<prompt> In cyclooxygenase COX pathway of the arachidonic acid AA metabolism, which of the following products helps to promote the platelet aggregation and vasoconstriction?C5aThromboxane A2Leukotriene B4C1 activators  <response>: C5a - is anaphylatoxin and chemotactic LTB4 - is chemotactic Arachidonic acid metabolites cyclooxygenase pathway 