<prompt> All are morphine effects EXCEPT:MiosisDelayed gastric emptyingRespiratory depressionHyperalgesia  <response>: Ref: Goodman Gillmans 14th ed. pg. 363-6 Effect of morphine is seen mainly at m-receptor. Effect on m-receptor depends on either supraspinal or spinal m- receptor. Supraspinal effects: Physical dependence, euphoria, analgesia, sedation. PEAS Spinal effects: Constipation, analgesia and respiratory depression. CAR Effect of morphine at heart: No effect at usual dose but at high dose it can cause bradycardia and hypotension. Effect of morphine at eye: No effect if applied locally. Miosis on systemic intake. Miosis can be worsened to pinpoint pupil upon systemic morphine toxicity.Note: Morphine causes analgesia. Hyperalgesia is one of thewithdrawal symptoms. 