Branches
- Mediastinal branches
- Thymic branches
- Pericardiacophrenic artery - travels with the phrenic nerve
- Sternal branches
- Perforating branches
- Twelve anterior intercostal branches, two to each of the top six intercostal spaces. In a given space, the upper branch travelling laterally along the bottom of the rib until it anastomoses with its corresponding posterior intercostal artery. The lower branch of the space anastomoses with a collateral branch of the posterior intercostal artery.
After passing the sixth intercostal space, the internal thoracic artery splits into the following two terminal branches:
- Musculophrenic artery - roughly follows the costal margin
- Superior epigastric artery - continues the course of the internal thoracic artery, travelling downward into the abdominal wall
Read more about this topic: Internal Thoracic Artery
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