Return to the anterior chest wall. (G 3.22;N 187;Gl 7.11)

  1. Identify the transversus thoracis muscle adjacent to the sternum.
  2. Clean the internal thoracic artery and vein and at least one anterior intercostal artery and vein.
Important Relationship

The internal thoracic artery is positioned posterior (deep) to the first six costal cartilages.

Transversus Thoracis Muscle