Anatomy and function
The anterior communicating artery connects the proximal left and right anterior cerebral arteries and forms the anterior connection of the circle of Willis.
Where to look in the model
The short transverse vessel connecting both ACAs at the anterior brain base.
What this view does not establish
The circle of Willis has many anatomical variants. The presence of a connection does not guarantee adequate collateral compensation in every situation.
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.