If a drug is known to be distributed into total body water, what dose () is needed to obtain an initial plasma level of 5 mg/L in a patient weighing 70 kg?( )
A. 210
B. 150
C. 110
D. 50
E. 35
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Alpha-1 agonists cause reflex bradycardia, which can be blocked by ( )
A. atenolol
B. atropine
C. mirtazapine
D. phenylephrine
E. propranolol
Which one of the following effects is caused by the ingestion of mushrooms that contain pilocarpine?( )
A. Tachycardia
Bronchodilation
C. Diarrhea
D. Hypertension
E. Hyperthermia
Increasing the concentration of norepinephrine in adrenergic synapses leads to ( )
A. activation of dopa decarboxylase
B. increased release of norepinephrine,
C. activation of presynaptic Gi coupled receptors
D. stimulation of MAO
E. activation of tyrosine hydroxylase
Urination in the human subject is decreased by ( )
A. muscarinic agonists
B. muscarinic antagonists
C. AChase inhibitors
D. Nicotinic agonists
E. Spider venom