The uncus is located in the inferior, medial aspect of the temporal lobe. This structure, and the adjacent parahippocampal gyrus, can herniate through the tentorial notch. This is most commonly seen with smaller temporal lesions or larger lesions involving the frontal or parietal lobes.

Is uncus part of hippocampus?

The uncus of the hippocampus (marked on the figure by the orange shading) is part of the anterior parahippocampal gyrus that bends over and rests on itself, separated from entorhinal cortex below by the uncal sulcus.

What artery supplies uncus?

Arterial supply

The uncus is irrigated by uncal branches of the anterior choroidal artery most commonly, followed by branches of the middle cerebral artery (usually from the temporopolar artery), internal carotid artery, and posterior cerebral artery ⁵.