The first branch is a common origin of the brachiocephalic trunk and left common carotid artery, and the second branch is the left subclavian artery, or, less commonly, the left common carotid artery takes origin from the brachiocephalic trunk.
What is brachiocephalic trunk?
- The brachiocephalic artery (or brachiocephalic trunk or innominate artery) is an artery of the mediastinum that supplies blood to the proper arm and the head and neck.
- It is the first branch of the aortic arch. Soon after it emerges, the brachiocephalic artery divides into the proper common carotid artery and the right subclavian artery.
- In the left side of the body there is no brachiocephalic artery. The left common carotid artery , and therefore the left subclavian artery, come directly off the aorta . Two brachiocephalic veins are present.
To learn more about carotid aortic arch: https://brainly.com/question/8963123
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