Fig. 2. (A) Gross cadaveric dissection inside the basilar venous plexus (blue) after opening a window into the dura mater (black arrow) over the clivus. Note the septation (*) within the basilar venous plexus. The septation is seen attaching to the anterior and posterior walls of the plexus. For reference, laterally, note the right abducens nerve (VI) traveling through the dura (Dorello’s canal) over the clivus and continuing anteriorly under the petroclinoid (clival) ligament (yellow arrow) to enter the cavernous sinus with the inferior petrosal sinus. (B) Gross dissection noting a more or less horizontally positioned intraluminal septation (*) within the basilar venous plexus (BVP).

Anat Cell Biol 2023;56:435~440 https://doi.org/10.5115/acb.23.171

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