[A rare variation in the zone of the carotid artery].
An extremely rare variation in the angioarchitecture of the carotid arteries consists in the complete missing of the right common carotid artery. The brachiocephalic trunc (innominate artery), forming a bulbus-like extension, branches out into three major stems: internal carotid artery, external carotid artery and the right subclavian artery. The variation is embryologically explainable: The aortic arches III and IV arise together (without ventral aortic root between them) from the persisting initial segment of the right ventral aorta.
Hess
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Institut für Anatomie der Universität Regensburg, Deutschland.
Elmagd
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D001013:Aorta, Thoracic / Q000196:embryology; D017536:Carotid Artery, Common / Q000002:abnormalities* / Q000033:anatomy & histology / Q000196:embryology; D006801:Humans
Eine seltene Variation im Bereich der Arteria carotis.