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Cardiology MCQ 67. Bovine arch

Q. Bovine arch refers to?
A. Common origin of brachiocephalic artery and left common carotid artery
B. Common origin of left and right common carotid artery
C. Separate origin of right subclavian and common carotid artery
D. Anomalous origin of left subclavian artery from pulmonary artery
Answer: A. Common origin of brachiocephalic artery and left common carotid artery

Explanation: 
Bovine arch refers to common origin of brachiocephalic artery and left common carotid artery from the aortic arch. It is most common variation of aortic arch seen in human beings. 
Bovine arch (BA) term is a misnomer because it does not actually reflect the arch
branching pattern found in cattle (a single common brachiocephalic trunk that gives rise to all head and upper extremity vessels is seen in cattles.)


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