The subclavian artery is one of the Lager arties of the body, which supplies mainly the thorax region and head and neck, upper arms of the body. It arises either directly from the Arch of the aorta or from the brachiocephalic trunk, which is also the branch of the arch of the aorta. The arch of the aorta is divided into three parts – brachiocephalic artery, left common carotid artery, and left subclavian artery. One should click for more info about the subclavian artery, and its branches
The left subclavian artery originates directly from the arch of the aorta, and the right subclavian artery originates from the brachiocephalic trunk, which also gives rise to the right common carotid artery. The right subclavian mainly supplies the right half of the upper body, and the left subclavian artery supplies the left upper half of the body.
The subclavian artery continues into the axillary artery near the lateral half of the first rib. It divides into eight branches arising from three aspects of muscular region branches, cervical region branches, and thoracic region branches.
- In the thoracic region, it divides into a vertebral artery, internal thoracic artery, and thyrocervical trunk. The internal thoracic artery further subdivides into musculophrenic, superior epigastric, and pericardiophrenic artery, which supply the thorax region.
- In the muscular region, the subclavian artery further divides into costocervicaltrunk, which further divides into supreme intercostal and deep cervical arteries.
- In the cervical region, it divides into a deep branch of the transverse cervical artery.
- So all the branches of the subclavian artery are –
- Vertebral artery, internal thoracic artery, thyrocervical trunk, suprascapular artery, dorsal scapular artery, costocervical trunk, deep cervical artery, inferior thyroid artery, and superior intercostal artery.
- Clinical – obstruction of the artery may lead to serious complications and reduce the supply to various tissues.
These arteries can be seen through ultrasound as they are mostly superficial and divided into three parts according to the regions they supply. These arteries are at a higher risk of developing an aneurysm.