An Accessory Muscle of Pectoral Region: A Case Repor

During the routine dissection of a male cadaver in the Department of Anatomy, Shri B M Patil Medical College Bijapur, India, we found a long ribbon like muscle in right pectoral region, which originated from right 5 th and 6th ribs at costo-chondral junction, in between the pectoralis major and pectoralis minor muscles [Table /Fig -1].From its origin, it travelled above and laterally and inserted by fusing with fibres of pectoralis minor.Pectoralis minor was inserted on medial border and upper surface of coracoid process of scapula.Accessory pectoral muscle was 14 cm long and it was 4 cm broad at its origin.The nerve supply to this muscle was through medial pectoral nerve [Table /Fig- 2].No variations were found with regards to origin and insertion of pectoralis major and minor.This accessory muscle was found only on right side and left side pectoral muscles showed no variations.