"anterior and posterior ethmoidal arteries (ICA) – sphenopalatine artery (ECA) 1"
"superior orbital artery (ICA) – superficial temporal artery (ECA) 1"
"dorsal nasal artery (ICA) – nasal branches of the facial artery (ECA)"
"inferolateral trunk (ICA) – branches of maxillary artery (ECA) 1"
"the inferolateral trunk is a variably identified branch of the cavernous (C4) segment of the ICA. Branches of the inferolateral trunk may anastomose with the middle meningeal artery/deep temporal artery/artery of the foramen rotundum 1."
"anterior and posterior ethmoidal arteries (ICA) – sphenopalatine artery (ECA) 1"
"superior orbital artery (ICA) – superficial temporal artery (ECA) 1"
"dorsal nasal artery (ICA) – nasal branches of the facial artery (ECA)"
"inferolateral trunk (ICA) – branches of maxillary artery (ECA) 1"
"Collateral pathways are also present between the occipital artery (from the ECA) and muscular branches of the vertebral arteries around the C1 and C2 vertebrae 1."