Different branches of the MMA with their respective anastomosis
| MMA Branches | Origin from the MMA | Territory (Dural and Neural) | Possible Anastomosis |
|---|---|---|---|
| Petrosal branch | Foramen spinosum | Trigeminal ganglion and nerves; posteromedial floor of the middle fossa; insertion of tentorium (medial half); superior petrosal sinus | Ascending pharyngeal artery (carotid branch); medial and lateral tentorial arteries (ICA) |
| Superior tympanic artery | Petrosal branch | Greater superficial petrosal nerve; geniculate ganglion; tympanic cavity (superior part) | Inferior tympanic artery (ascending pharyngeal artery); caroticotympanic artery (ICA); anterior tympanic artery (IMA); stylomastoid artery (posterior auricular artery) |
| Cavernous branch | Petrosal branch | Lateral wall of the cavernous sinus | Accessory meningeal artery; inferolateral trunk (ICA) |
| Anterior division or frontal branch | Pterional region | Frontal and anterior parietal convexity; superior sagittal sinus; anterior and middle fossa (lateral part) | Anterior and posterior ethmoidal arteries (OA); contralateral MMA |
| Falcine arteries | Anterior and posterior division | Falx cerebri | Anterior falcine artery (OA); anterior cerebral artery; posterior meningeal artery (vertebral artery) |
| Medial branch or sphenoidal branch | Anterior division | Lesser sphenoid wing; superior orbital fissure; peri-orbital (lateral) | Recurrent meningeal branches (OA); inferolateral trunk (ICA) |
| Petrosquamosal branch | Posterior division | Posterolateral floor of the middle fossa; insertion of tentorium (lateral half); superior petrosal sinus; transverse and sigmoid sinuses; dura of the posterior fossa (superior part) | Ascending pharyngeal artery (jugular branch); lateral tentorial artery (ICA); occipital artery (mastoid branch) |
| Parieto-occipital branch | Posterior division | Temporosquamous dura; parieto-occipital convexity; superior sagittal sinus | Posterior meningeal artery (vertebral artery) |