What Is the Uncus

The uncus is the anatomical structure located within the mesial temporal lobe that can herniate over the tentorial edge and compress the oculomotor nerve

What makes up the uncus?

The term uncus was coined by Felix Vicq d’Azyr (1748–1794). The uncus has an anterior segment, an apex, and a posterior segment that has an inferior and a posteromedial surface; the uncus is related medially to cisternal elements and laterally to intraventricular elements.

What is deep to uncus?

Deep to the uncal cortex is the amygdala (#4860). In humans, the main areas of olfactory cortex are. Piriform cortex: The most posterior part of the orbitofrontal cortex (fig 14a), lateral to the lateral olfactory stria, and extending to the adjacent sulcus dorsal to the uncus (#6624).