Brachiocephalic trunk

The brachiocephalic trunk (BCT) is a major vessel that supplies the head, neck and right arm. The BCT has previously been known as the innominate artery

The BCT is the first of the three main branches of the aortic arch, which originates from the upward convexity. It measures 4-5 cm in length with a diameter of 12.1 ± 1.6 mm. 

After arising in the midline it courses upwards to the right, crossing the trachea and bifurcates posterior to the right sternoclavicular joint, into the right subclavian and right common carotid arteries. It has no other branches. 

Thoracic anatomy
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Article information

rID: 28697
System: Vascular
Section: Anatomy
Synonyms or Alternate Spellings:
  • innominated artery
  • Brachiocephalic artery
  • Brachiocephalic trunk (BCT)

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