Urination in the human subject is decreased by ( )
A. muscarinic agonists
B. muscarinic antagonists
C. AChase inhibitors
D. Nicotinic agonists
E. Spider venom
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A 5-year-old child becomes ill while visiting relatives who have a farm in Arkansas. His symptoms include severe abdominal cramps with vomiting and diarrhea and profuse lacrimation and salivation.Pupillary constriction is marked. The most likely cause is exposure to ()
A. herbicides
B. antifreeze
C. lead-based paint
D. insecticides
E. rat poison
Ganglion blocking agents are of little clinical value today but they are important drugs to know for solving cardiovascular drug problems because they can block ()
A. all muscarinic receptors
B. all nicotinic receptors
C. all autonomic reflexes
D. the direct actions of drugs on blood vessels
E. the direct actions of drugs on the heart
Reflex tachycardia caused by the systemic administration of albuterol can be blocked by what drug?()
A. dobutamine
B. prazosin
C. phenylephrine
D. metoprolol
E. low-dose epinephrin
Which of the following best describes the effect of a competitive antagonist on the dose-response curve?()
A. Non-parallel left shift
B. Non-parallel right shift
C. Parallel left shift
D. Parallel right shift
E. No pacts on dose-response curve