Question 3#

The breast receives its blood supply from all of the following EXCEPT:

A. Branches of the internal mammary artery
B. Branches of the superior epigastric artery
C. Branches of the posterior intercostal arteries
D. Branches of thoraco-acromial artery

Correct Answer is B


The breast receives its principal blood supply from:

  1. Perforating branches of the internal mammary artery.
  2. Lateral branches of the posterior intercostal arteries.
  3. Branches from the axillary artery, including the highest thoracic, lateral thoracic, and pectoral branches of the thoracoacromial artery.

The second, third, and fourth anterior intercostal perforators and branches of the internal mammary artery arborize in the breast as the medial mammary arteries. The lateral thoracic artery gives off branches to the serratus anterior, pectoralis major and pectoralis minor, and subscapularis muscles. It also gives rise to lateral mammary branches.