· 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⁾.