Head: pterygoid venous plexus

Question 1

Communication in front

Answer 1

with Anterior facial vein by Deep facial vein

Question 2

Communications above

Answer 2

With Cavernous sinus, by emissiary veins passing through foramen ovale and foramen lacrum

Question 3

Communications above and in front

Answer 3

with Inferior ophthalmic vein, by vein passing through IOF