In
Human Anatomy , the is a major
Artery of the upper
Thorax that mainly supplies blood to the head and arms. It is located below the
Clavicle , hence the name. There is a left subclavian and a right subclavian.
The usual branches of the subclavian on both sides of the body are the
Internal Thoracic Artery , the
Vertebral Artery , the
Thyrocervical Artery (trunk), and the
Costocervical Artery (trunk). The subclavian becomes the
Axillary Artery at the lateral border of the first
Rib .
Embryologically , the left subclavian simply arises from the left 7th
Intersegmental Artery , while the right subclavian arises, proximal to distal:
- 1. Aortic Arch IV
- 2. right Dorsal Aorta (between the 4th and the 7th intersegmental arteries)
- 3. right 7th intersegmental artery
