<prompt> Urination in the human subject is decreased byNicotinic agonistsAChase inhibitorsmuscarinic agonistsmuscarinic antagonists  <response>: ANTICHOLINERGIC DRUGS Muscarinic receptor antagonists, Atropinic, Parasympatholytic Smooth muscles:- All visceral smooth muscles that receive parasympathetic motor innervation are relaxed by atropine M3 blockade. Tone and amplitude of contractions of stomach and intestine are reduced; the passage of chyme is slowed--constipation may occur, spasm may be relieved. Atropine has relaxant action on ureter and Urinary bladder; urinary retention can occur in older males with prostatic hyperophy. However,this relaxant action can be beneficial for increasing bladder capacity and controlling detrusor hyperreflexia in neurogenic bladderenuresis. Ref:- kd tripathi; pg num:-114,115 