Which of the following causes decrease in BP
NOSubstances which cause vasodilatation can cause fall in BP.Substances which cause vasoconstriction can cause a rise in BP.Among the given options only NO (nitric acid) is vasodilator (causes fall in BP). Other three options cause vasoconstriction (cause rise in BP).
Thromboxane A2
Vasopressin
NO
PGF2