The branches of the aortic arch. Shoulderhead. The branches of the ascending part of the aorta. Since, according to the law of the shortest distance, the heart from which it comes out lies closest to the aorta, the first vessels extending from the aorta are its branches to the heart – aa. coronariae dextra et sinistra, described above.
The branches of the aortic arch. From the concave side of the aortic arch, the arteries move to the bronchi and to the thymus, and from the convex side of the arch, three trunks go from right to left: truncus brachiocephalicus, a. carotis communis sinistra and a. subclavia sinistra.
The brachiocephalic trunk, truncus brachiocephalicus, about 3–4 cm long, represents the remnant of the right ventral aorta of the embryo; it goes obliquely up, back and to the right, being located in front of the trachea, where it gives a branch to the thyroid gland – a. thyroidea ima, and is divided behind its right branches: right common carotid and right subclavian arteries behind the right sternoclavicular joint.