Uberon definition : The superior thoracic artery (highest thoracic artery) is a small vessel normally
arising from the first division of the axillary artery, but may arise from the thoracoacromial
artery, itself a branch of the second division of the axillary artery. Running forward
and medialward along the upper border of the pectoralis minor, the superior thoracic
artery passes between it and the pectoralis major to the side of the chest. It supplies
branches to the first and second intercostal spaces as well as to the superior portion
of serratus anterior. It anastomoses with the internal mammary and intercostal arteries.;
The superior thoracic artery (highest thoracic artery) is a small vessel normally
arising from the first division of the axillary artery, but may arise from the thoracoacromial
artery, itself a branch of the second division of the axillary artery. Running forward
and medialward along the upper border of the pectoralis minor, the superior thoracic
artery passes between it and the pectoralis major to the side of the chest. It supplies
branches to the first and second intercostal spaces as well as to the superior portion
of serratus anterior. It anastomoses with the internal mammary and intercostal arteries.