21. The third option is the pectoralis minor muscle, which is mainly used in children. 22. The "'anterior fibers "'assist Pectoralis Major to flex the shoulder. 23. In the UK the strips of pectoralis minor are called " chicken mini-fillets ". 24. It passes through the deltopectoral triangle, a space between the deltoid and the pectoralis major muscles. 25. The species " M . pectoralis " looks similar, but its pygidium is rounded. 26. The lat's functions are also assisted, both by shoulder extensors ( pectoralis muscles ). 27. Other sites include intercostal spaces, erector spinae, pectoralis muscles, glutei, and the chest. 28. The medial pectoral nerve pierces both the pectoralis minor and the sternocostal head of the pectoralis major. 29. The medial pectoral nerve pierces both the pectoralis minor and the sternocostal head of the pectoralis major. 30. In the back, there is the pectoralis major muscle ( in both men and women ).
