A small infarct damages the posterior part of the posterior limb of the internal capsule on the left, producing a right homonymous hemianopia. The artery supplying this region is a branch of the:

• A Lateral striate (lenticulostriate) branches of the middle cerebral artery
• B Recurrent branch of Heubner
• C Callosomarginal artery
• D Anterior choroidal artery ✓

Explanation

The anterior choroidal artery, arising from the internal carotid artery, supplies the posterior portion of the posterior limb of the internal capsule, including the optic radiation, along with the tail of caudate, hippocampus, and lateral geniculate body. The lenticulostriate arteries supply the anterior two-thirds of the posterior limb and the lentiform nucleus. Heubner's recurrent artery supplies the anterior limb and caudate head.

Reference: Gray's Anatomy for Students, 4th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.