Thromboxane A2 causes
Vasodilatation and platelet aggregaion
Vasodilatation and anti platelet aggregatory
Vasoconstriction and anti platelet aggregatory
Vasoconstriction and platelet aggregaion
Thromboxane A2 secreted by platelets promotes platelet aggregation and vasoconstriction Ref: Ganong's Review of Medical Physiology Twenty-Third Edition Page No:563
Cardiovascular system