Fig. (5) ICA enter the Cavernous Sinus (CS) inferiorly at the level of the Petrolingual Ligament (PLL). Within the CS, it can be divided into five segments – (1) Posterior vertical segment (2) Posterior Genu [Posterior Bending] (3) Horizontal Segment (4) Anterior Genu [Anterior Bending] (5) Anterior Vertical. Blue area represents the Cavernous Sinus. MHT = Meningohypophseal Trunk, ILT = Inferolateral Trunk. Ant.= Anterior; Car. = Carotid; Clin. = Clinoid; Fiss. = Fissure; For. = Foramen; Impress. = Impression; Orb. = Orbital; Pet. = Petrous; Sup. = Superior; Trig. = Trigeminal.