=====Pars orbitalis=====

The pars orbitalis connects with the lateral [[orbital gyrus]]. This connection occurs anterior to the insula so that operating through these gyri provides an ideal pathway to anterior insular tumors. Additionally, there is usually a prominent subarachnoid
space below the tip of the pars triangularis, providing a passage into the sylvian fissure.

Cortex inferior and anterior to the horizontal ramus of the lateral fissure).

{{::superior_temporal_gyrus.png|}}

The bone flap has been removed and the [[dura mater]] has been opened as a flap pediculated towards the greater [[sphenoid wing]] previously roungered to improve parasellar visualization. [[Sylvian fissure]], [[Inferior frontal gyrus]], [[Superior temporal gyrus]] and [[Middle temporal gyrus]] are exposed. Three pars of parasylvian inferior frontal gyrus must be distinguished: [[pars orbitalis]] (pOr) in relation to the [[orbital roof]]; [[pars triangularis]] (pT) the widest area of [[sylvian fissure]] (good place for start opening of sylvian fissure); [[pars opercularis]] (pOp) where [[Broca’s Area]] is located.