Anterior cerebral artery branches

From WikiCNS

1. A1 – horizontal segment that extends from origin to AComm
   1. medial lenticulostriate arteries arise from A1 and go to head of the caudate and anterior limb of the internal capsule
2. A2 – from AComm to bifurcation of pericallosal and callosomarginal arteries
   1. recurrent artery of Heubner typically arises from proximal A2 branch
   2. infarct symptoms: weakness and sensory loss in contralateral leg (distal > proximal - proximal muscles are stronger because of better collateralization of the cortical homunculus)
   3. infarction of both ACA will cause severe gait impairment so that patient can stand but not take a step
3. A3 – 5 major branches
   1. Remember: Our Friends Picked Cantaloupe and Squash (Orbitofrontal, Frontopolar, Pericallosal, Callosalmarginal, Splenial)