Thoracic wall -deep structures Deep structures Deep fascia Superficial layer Deep layer-clavipectoral fascia Muscles of thorax Pectoralis major Rectus abdominis First layer 二头肌 Ext obliquus m Subclavius emus abdominis Pectoralis minor F Second layer mus abdominis Serratus anterior Intersects Lines alba 疲壁下动 Ext Intercostal m 园sien Int intercostal m -Third layer 投沟神 innermost intercostal m 谁状机 Transverse thoracic m. Fourth layer creaser Endothoracic fasciaThoracic wall - deep structures Deep structures Deep fascia Superficial layer Deep layer—clavipectoral fascia Muscles of thorax Pectoralis major Rectus abdominis Ext.obliquus m. Subclavius Pectoralis minor Serratus anterior Ext. Intercostal m. Int.intercostal m. innermost Intercostal m. Transverse thoracic m. Endothoracic fascia First layer Second layer Third layer Fourth layer