All of the following are actions of muscarinic antagonist except
Refer katzung 11e p 113,123 Muscarinic antagonist will produce action opposite of parasympathetic system, that will decrease gastric as well as respiratory secretion Action of acetylcholine through muscarinic receptors is to increase the AV conduction, thus, resulting in bradycardia. Antagonists will thus result in opposite effect that is shoen the AV conduction Acetylcholine muscarinic receptors cause contraction of sphincter pupillae muscle and result in miosis. Muscarinic antagonist will have opposite effect that is mydriasis.
Decrease gastric secretion
Prolonged AV conduction
Decreases tracheobronchial secretion
Causes contraction of radial muscle of iris
Autonomic nervous system