· Borders: 1. Trochelar Nerve Middle_fossa_triangles Clinoidal (Anteromedial) Triangle 2
2. Opthalmic Division (V1) 3. Tentorial Edge · Contents: 1. Cavernous ICA 2. Abducens Nerve
A triangular area, described by Parkinson, through which the intracavernous portion of the carotid artery could be exposed surgically was found in all specimens in the study of Harris and Rhoton 1).