<prompt> Dopamine receptor with inhibitory action ?D5DiD2None  <response>: Ans. is c i.e., D2 Two types of dopamine receptors D I , D2 were originally described. Three more D3, D4, D5 have now been identified and cloned. All are G protein coupled receptors and are grouped into two families: Dl like: Dl, D5 are excitatory D2 like: D2,3,4 are inhibitory 