part of develops from ends during starts during artery ventral aorta external carotid artery xenopus_anatomy UBERON:0001070 XAO:0000345 ECA Artery that arises from the ventral aorta and delivers blood to the filter apparatus. It is visible as a bilateral pair of vessels on the ventral surface of the head, running between the heart and the tip of the jaw. death filter chamber NF stage 32