Matching Pairs muscles activity Online version activities for key terms over muscles in the body by Cole Helton 1 rectus abdominis 2 trapezius 3 psoas major 4 rhomboid major 5 quadratus lumborum 6 iliacus orgin: t12- L5 insertion: femur, lesser trochanter action: flexes and abducts the hip and flexes the trunk orgin:hip, iliac fossa insertion: femur, lesser trochanter action:flexes and abducts the hip and flexes the trunk orgin:hip bone, iliac crest, iliolumbar ligament insertion: rib 12, lower border action: acting individually it laterlly flexes the trunk orgin: occipital bone, external protuberance insertion:clavicle, scapula action:extends and laterally flexes the head and neck orign: hip bone,pubis insertion: sternum, costal cartlidges 5-7 orgin: t2-t5,spinous processes insertion: scapula, medial border action: medially rotates and retracts the scapula