Editing Internal capsule (section)

=== Blood supply ===
The superior parts of both the anterior and posterior limbs, and the genu of the internal capsule are supplied by the [[lenticulostriate artery|lenticulostriate arteries]], which are branches of the M1 segment of the [[middle cerebral artery]].

The inferior half of the anterior limb is supplied via the [[recurrent artery of Heubner]], which is a branch of the [[anterior cerebral artery]].

The inferior half of the posterior limb is supplied by the [[anterior choroidal artery]], which is a branch of the [[internal carotid artery]].

As in many parts of the body, some degree of variation in the blood supply exists. For example, [[Posterior cerebral artery#Central branches|thalamoperforator arteries]], which are branches of the [[basilar artery]], occasionally supply the inferior half of the posterior limb.