MCQ IN MEDICINE

Detailed explanation-1: -Brachiocephalic Trunk-arises from the right horn of the aortic sac. Right common carotid artery-arises from the right third aortic arch. Right internal carotid artery-arises from the right third aortic arch. Right external carotid artery-arises from the right horn of the aortic sac.

Detailed explanation-2: -After a short superior course, the brachiocephalic artery then divides into the right subclavian and right common carotid arteries.

Detailed explanation-3: -The brachiocephalic artery, brachiocephalic trunk, or more commonly referred to clinically as the innominate artery, is one of the three great vessels of the aortic arch that supplies blood to the head, neck and upper extremities.