<prompt> Which of the following aeries supply pectoralis major muscle:Pectoral branches of thoracoacromial aeryIntercostal aeryLateral thoracic aeryAll  <response>: A i.e. Pectoral branches of thoracoacromial aery; B i.e. Intercotal aery; C i.e. Lateral thoracic aeryPectoralis major muscle is supplied by one dominant vascular pedicle from pectoral branch of thoraco-acromial aery, supplied by several smaller secondary segmental vessels from deltoid clavicular branches of thoracoacromial aery, and perforating branches of, intercostal, internal thoracicinternal mammary, superior thoracic and lateral thoracic aeries.Intercostal aeries supply blood to intercostal muscle, pectoral muscles, breast, skin, by both anterior posterior intercostal, aeries; spinalis, longissimus thoracic, iliocostalis, medial aspects of latissimus dorsi trapezius by dorsal branch of posterior intercostal aery and serratus anterior by muscular branch of posterior intercostal aery. 