=Muscles of the Abdomen:= External oblique 136 Internal oblique 137 Transversalis abdominis 138 Rectus abdominis 138 Pyramidalis abdominis 139 =Muscles of the Back:= Trapezius 140 Latissimus dorsi 142 Rhomboid 144 =The Cutaneous Muscle of the Trunk= 147 =The Coccygeal Region:= Ischio-coccygeal muscle 149 Superior sacro-coccygeal muscle 150 Lateral sacro-coccygeal muscle 150 Inferior sacro-coccygeal muscle 150 =Muscles of the Neck:= Mastoido-humeralis 150 Sterno-mastoid 153 Omo-trachelian 155 Levator anguli scapulæ 156 Splenius 158 =Infrahyoid Muscles:= Sterno-thyroid and sterno-hyoid 160 Omo-hyoid 160 =Suprahyoid Muscles:= Mylo-hyoid 161 Digastric 161 =Panniculus of the Neck= 162