What is Substantia nigra?
The '''substantia nigra''' is a part of the [[brain]]. This is the part of the [[midbrain]] that produces [[dopamine]] involved in [[movement]]. It is involved in the [[pathogen]]esis of [[Parkinson's Disease]]. {{Infobox brain | Name = Substantia nigra | Latin = substantia nigra | Image = Substantia nigra.gif | Caption = Substantia nigra highlighted in red. | Image2 = Midbrainsection.svg | Caption2 = Section through [[superior colliculus]] showing substantia nigra. | Width = 350 | IsPartOf = [[Mesencephalon|Midbrain]], [[basal ganglia]] | Acronym = SN | Components = | Artery = | Vein = }} [[File:Basal ganglia circuits.svg|thumb|320px|Anatomical overview of the main circuits of the basal ganglia, substantia nigra is shown in black. Picture shows 2 coronal slices that have been superimposed to include the involved [[basal ganglia]] structures. + and – signs at the point of the arrows indicate respectively whether the pathway is excitatory or inhibitory in effect. {{color|green|Green arrows}} refer to excitatory [[:en:Glutamic acid|glutamatergic]] pathways, {{color|red|red arrows}} refer to inhibitory [[:en:gamma-Aminobutyric acid|GABAergic]] pathways and {{color|turquoise|turquoise arrows}} refer to [[:en:dopamine|dopaminergic]] pathways that are excitatory on the direct pathway and inhibitory on the indirect pathway.]] [[Category:Anatomy of the brain]] {{biology-stub}}