Image Based Question-65105

Which of the following arteries supply this muscle (arrow) in image.

A. Pectoral branches of thoracoacromial artery

B. Intercostal artery

C. Lateral thoracic artery

D. All

Correct Answer » A Explanation

muscle is Pectoralis major

• Pectoralis major muscle is supplied by one dominant vascular pedicle from pectoral branch of thoraco-acromial artery, supplied by several smaller secondary segmental vessels from deltoid & clavicular branches of thoracoacromial artery, and perforating branches of, intercostal, internal thoracic/internal mammary, superior thoracic and lateral thoracic arteries.
• Intercostal arteries supply blood to intercostal muscle, pectoral muscles, breast, skin, (by both anterior & posterior intercostal, arteries); spinalis, longissimus thoracic, iliocostalis, medial aspects of latissimus dorsi & trapezius (by dorsal branch of posterior intercostal artery) and serratus anterior (by muscular branch of posterior intercostal artery).