Anatomy and function
A posterior communicating artery usually connects the internal carotid artery with the posterior cerebral artery on the same side, forming a posterolateral connection of the circle of Willis.
Where to look in the model
Two schematic connections at the brain base link the anterior and posterior circulations.
What this view does not establish
Size and development vary substantially. The model uses an idealised complete-ring configuration.
Open in 3DSources and precision
Cortex uses the FreeSurfer fsaverage5 template surface, with 10,242 vertices per hemisphere. Functional references use selected Destrieux sulcal and gyral parcels. Deep structures use fsaverage aseg segmentations. The Sereno2020 cerebellar research surface preserves folial geometry, but comes from another specimen; its assembled placement is schematic, without medical registration across templates. Arterial paths are manually drawn teaching schematics, not CTA/MRA reconstructions.
An educational schematic prototype for understanding spatial relationships. Item-by-item independent neuroanatomical review is pending. Functional highlights are not results of an individual examination and do not support individual diagnosis or treatment decisions.