4. Lateral (A4) (Fig 3b,c,d,e) -- From the anteromedial aspect of the interlobar artery, find a laterally coursing branch -> A4a, A4b

5. Medial (A5) (Fig 3c,d,e) -- From the anteromedial aspect of the interlobar artery, find a medially coursing branch either arising alone or with A4 -> A5a, A5b