Propranolol was given by intram uscular injection to several dogs during a lab experim ent. One hour

Propranolol was given by intram uscular injection to several dogs during a lab experim ent. One hour later, each dog received a di erent autonom ic drug, and the e ects of that drug were recorded. Which of the follow ing drug-induced e ects was m ost likely best counteracted by propranolol pretreatment? a. Isoproterenol-induced hyperglycem ia b. Nicotine-induced decrease in skin blood ow c. Norepinephrine-induced re ex bradycardia d. Phenylephrine-induced mydriasis e. Pilocarpine-induced contraction of bronchial m uscle

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