1. Anomalous origin of the occipital artery from the cervical internal carotid artery 
Mark T. Benson, MB, ChB, John D. Hamer, ChM 
Journal of Vascular Surgery 
Volume 8, Issue 5, Pages (November 1988)
DOI: / (88)
Copyright © 1988 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

2. Fig. 1
Right carotid angiograms obtained by femoral catheterization show anomalous origin of occipital artery from the internal carotid artery (arrow).
Journal of Vascular Surgery 1988 8, DOI: ( / (88) )
Copyright © 1988 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

3. Fig. 2
Right carotid bifurcation at operation with anomalous vessel (arrow) arising from the internal carotid artery.
Journal of Vascular Surgery 1988 8, DOI: ( / (88) )
Copyright © 1988 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

4. Fig. 3
Development of the carotid arteries in humans. Paired aortic arches are numbered I through VI. The third arches form the internal carotid arteries. The external carotid arteries develop as branches of the third arches. They anastomose with endothelial channels left by the regression of the first and second arches. These channels may instead link up with the third arch artery and thus form the basis for cervical branches from the internal carotid artery. A, Aorta; PA, pulmonary artery; SCA, subclavian artery; VA, vertebral artery; ICA, internal carotid artery; ECA, external carotid artery.
Journal of Vascular Surgery 1988 8, DOI: ( / (88) )
Copyright © 1988 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions