Abstract
In human beings the most common branching pattern of the aortic arch was its division into three great vessels ie the brachiocephalic trunk, left common carotid artery and the subclavian artery. The vertebral arteries arise from the superior aspect of the first part of the subclavian artery. In present case, a left vertebral artery arose from the aortic arch as fourth branch was found. The diameter of left vertebral artery at its origin was 6 mm as compared to the right vertebral artery, which has diameter of 3.5 mm at its origin. In this case left sixth dorsal intersegmental artery might have persisted as first part of vertebral artery hence left vertebral artery arising from arch of aorta. Knowledge of the variations in branching pattern of the aortic arch is important in the diagnosis of intracranial aneurysm after subarachnoid haemorrhage.J. Biomed. Sci. 2015, 2(3):21-23.
Highlights
In human beings the most common branching pattern of the aortic arch was its division into three great vessels ie the brachiocephalic trunk, left common carotid artery and the subclavian artery
Knowledge of the variations in branching pattern of the aortic arch is important in the diagnosis of intracranial aneurysm after subarachnoid haemorrhage
We found left vertebral artery arose from the aortic arch as fourth branch
Summary
In human beings the most common branching pattern of the aortic arch was its division into three great vessels ie the brachiocephalic trunk, left common carotid artery and the subclavian artery. Its importance in head and neck surgery, angiography and arterial dissection has been mentioned in the literature [3, 4] In this case report, I am presenting a left vertebral artery as fourth branch of the aortic arch in a 65 year old male cadaver. It was related to the stellate ganglion and ventral rami of seventh and eighth cervical spinal nerves before entering into the foramen transversarium of sixth cervical (C6) vertebra. In this case report; the left vertebral artery varied in its origin. The length of vertebral arteries was measured with the help of thread and scale
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