• Arises on Left side from Arch of Aorta
    • Lies anterior to Subclavian Artery up to the Sternoclavicular Joint
  • On Right side, Brachiocephalic Trunk bifurcates behind the Sternoclavicular Joint into Common Carotid and Subclavian Arteries
  • Gives off no branches proximal to its bifurcation
  • Lies within medial part of Carotid Sheath
    • Internal Jugular Vein lateral to it and Vagus nerve deeply placed between
    • Sympathetic trunk behind the artery and outside sheath
  • Bifurcates at level of upper lamina of Thyroid Cartilage (upper border of C4)
  • Terminal portion of artery often shows a slight dilatation (Carotid Sinus) – includes the commencement of the Internal Carotid Artery

Bifurcates into External Carotid Artery and Internal Carotid Artery