Internal Carotid Artery - Branches

Branches

The following are the branches of the internal carotid artery, listed by segment:

  • C1: Branches from the cervical portion - none.
  • C2: Branches from the petrous portion
    • Caroticotympanic arteries
    • vidian artery
  • C3: Branches from the lacerum portion - none
  • C4: Branches from the cavernous portion
    • Branches of the meningohypophyseal trunk:
      • 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
  • C5: Branches from the clinoid portion - none
  • C6: Branches from the ophthalmic portion
    • Ophthalmic artery
    • Superior hypophyseal artery
  • C7: Branches from the communicating portion
    • Posterior communicating artery
    • Anterior choroidal artery
    • Anterior cerebral artery (a terminal branch)
    • Middle cerebral artery (a terminal branch)

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