What part of the brain does the Internal Carotid Artery NOT typically supply?

The internal carotid artery is a major blood supply source for the brain and parts of the head. It primarily supplies the anterior circulation, which includes critical areas of the brain such as the frontal, parietal, and temporal lobes, as well as important structures like the eyes and eyelids through branches such as the ophthalmic artery.

The external ear, on the other hand, is not typically supplied by the internal carotid artery. Instead, its blood supply comes primarily from the external carotid artery and its branches, such as the posterior auricular artery. This distinction is important when understanding vascular supply to different regions of the head, and it highlights the dividing lines between the territories served by the internal and external carotid arteries. Thus, the external ear stands out as an area that the internal carotid artery does not typically supply.