Question 8 / 30:  A cholinergic agonist causes all of the following EXCEPT?
A  Bradycardia via M2 receptors
B  Bronchoconstriction via M3 and M2 receptors
C  Promotes urination via contraction of the detrusor muscle and relaxation of the trigone and
sphincter muscle via M3 receptors
D  Vasoconstriction of blood vessels via M3 receptors
E  Contraction of the pupils (miosis) via M3 and M2 receptors
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Explanation:

Cholinergic agonist do not directly innervate blood vessels. The promote vasodilation by binding M3 receptors on the endothelium which cause an increase in NO.

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