<prompt> Drugs used in the treatment of schizophrenia have in common their ability to?Block a-adrenergic receptors in the locus ceruleusBlock dopamine receptors in the brainSensitize the dopamine receptors in the locus ceruleusIncrease functional levels of norepinephrine in the synapses  <response>: All antipsychotic agents except rauwolfia alkaloids block dopamine receptors in the brain. Locus coeruleus is the site of most noradrenergic neurons in the brain. The dopaminergic neurons in the brain are primarily found in three areas ;the basal ganglia nigrostriatal tract, the midbrain mesolimbic tract, and the hypothalamus. Ref: Nurnberger, Jr. J.I. 2008. Chapter 3. Psychiatric Genetics. In M.H. Ebe, P.T. Loosen, B. Nurcombe, J.F. Leckman Eds, CURRENT Diagnosis Treatment: Psychiatry, 2e. 