Piriformis
Infraspinatus
Serratus Anterior
Rectus Abdominous
Gluteus Maximus
Quadratus Lumborum
Orgin- Hip bone : pubis Insertion- Sternum: xiphoid process Action- Flexes vertebral column while increasing intra-abdominal pressure.
Origin- Ribs 1-9 Insertion- Scapula: costal surface of the medial border. Action- Protracts the scapula and pectoral girdle.
Origin- Sacrum: Anterior Surface Insertion- Femur: Greater Trochanter Action- Abducts the hip and laterally rotates the femur.
Origin- Hipbone: illiac crest. Illiolumbar ligament. Insertion- Rib 12: Lower border L1-L4 Tranverse Process Action- Both sides work together extending the lumbar spine. Individually they laterally flex the trunk.
Origin- Scapula: Infraspinous fossa Insertion- Humerus: greater tubercle Action- Laterally rotates arm
Origin- Hip: Posterolateral ilium Insertion- Femur: Gluteal tuberosity. Iliotibial Tract. Action: Extends and Abducts hip.
