Inferolateral trunk

The inferolateral trunk, along with the meningohypophyseal trunk, is a branch of the C4 segment of the internal carotid artery. It is identified in up to 80% of dissection specimens but is less frequently seen on imaging.

It is also referred to as the artery to the inferior cavernous sinus, arising laterally from the cavernous segment and is directed inferiorly (thus inferolateral trunk).

The inferolateral trunk has three or four branches, as it passes between the trochlear nerve (CN IV) (below) and ophthalmic division of the trigeminal nerve (CN V) (above):

Anatomy: Brain

Anatomy: Brain

Article information

rID: 4732
Section: Anatomy
Synonyms or Alternate Spellings:
  • Inferolateral trunk
  • artery to the inferior cavernous sinus

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