part of develops from start stage end stage artery carotid artery primitive internal carotid artery internal carotid artery Artery that originates as rostral extensions of the dorsal aorta and travels through the hypophyseal fossa into the cranium. The internal carotid artery splits near the hypothalamus and optic nerve to form caudal and cranial divisions. TAO:0005081 ZFA:0005081 zebrafish_anatomy Homologous to the human ICA ZDB-PUB-140605-9. cranial carotid artery ICA unknown adult