Meningohypophyseal trunk

The meningohypophyseal trunk, also known as the posterior trunk, is a branch of the C4 segment of the internal carotid artery. It is, as opposed to the inferolateral trunk, almost always identified at dissection and usually visualised on good quality angiography.

Inferior hypophyseal artery: to the pituitary gland, contributing to the “inferior hypophyseal arterial circle”

Marginal tentorial artery: to the meninges of the tentorium.

Tentorial basal branch

Tentorial marginal branch

Meningeal branch - helps supply blood to the meninges of the anterior cranial fossa

Clivus branches - tiny branches that supply the clivus

Inferior hypophyseal artery

Capsular branches - supplies wall of cavernous sinus

Branches of the inferolateral trunk:

Branches to trigeminal ganglion - provide blood to trigeminal ganglion

Artery of the foramen rotundum

Branches to nerves