Subclavian Artery

Subclavian Artery

1. Origin

   • the right brachiocephalic arterial trunk arises at the level of the right sternoclavicular joint, the left aortic arch Direct born inside the chest

2. Divided Into

   • Left subclavian artery
     • Thoracic portion:
       • Da branches that supply the thoracic structures (only the left subclavian artery).
     • Pre-escalénica portion:
       • The subclavian artery and vein are separated, leaving the vein in the ventral anterior scalene muscle and the artery behind
       • Divided Into
         • On its way intrathoracic
           • (1) Ahead: the left common carotid artery and vagus nerve. (2) Behind: the bodies of the cervical vertebrae. (3) Inside: the esophagus, trachea, left, and the thoracic duct. (4) Outside: the pleura and lung
         • At the base of the neck
           • (1) Ahead:With the subclavian vein and innominate vein, strap muscles sternoclavicular joint (2) Behind: with the recurrent laryngeal nerve, pleural dome and suspensory ligaments, vertebropleurocostal (3) Below: with intrathoracic fascia, the handle subclavian and phrenic nerve anastomosis with the inferior cervical ganglion. (4) Above: with the thoracic duct
   • Right subclavian artery
     • Interscalene portion:
       • Deep to the anterior scalene, both are related
       • (1) Ahead: the anterior scalene muscle. (2) Behind: the brachial plexus. (3) Below: with the first rib. (4) Above: with brachial plexus
     • Post-escalénica Portion
       • (1) Inside: with the first fingering serratus anterior muscle. (2) Outside: the clavicle and the subclavian muscle. (3) Behind: the brachial plexus
   • Collateral Branches:
     • Vertebral artery:
       • spinal, muscular, meningeal, posterior spinal artery, anterior spinal artery, posterior inferior cerebellar artery
     • Trunk costocervical
       • superior intercostal artery, deep cervical artery
     • Trunk thyrocervical
       • Thyroid Artery lower Suprascapular artery, transverse cervical artery

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