The precommunicating part of cerebral artery (A1 segment) originates from the internal carotid artery and extends to the anterior communicating artery. The anteromedial central (medial lenticulostriate) arteries arise from this segment as well as the anterior communicating artery, which irrigates the caudate nucleus and the anterior limb of the internal capsule.

This definition incorporates text from the wikipedia website - Wikipedia: The free encyclopedia. (2004, July 22). FL: Wikimedia Foundation, Inc. Retrieved August 10, 2004, from


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