Muscle origin
External surfaces of 5-12th rib
Muscle insertion
Linea alba, pubic tubercle, anterior half of iliac crest
Muscle function
Trunk flexion (bilateral contraction), trunk lateral flexion (unilateral contraction), trunk rotation (contralateral), compresses abdominal viscera and assisting in forced expiration
Nerve innervation
T7-12 (Lovett reactor T4-C6)
Primary muscle type
Phasic / Mixed type (50-60%)
Myofascial lines
Spiral line
Lateral line
Primary inhibatory muscles
Rhomboid, Latissimus dorsi both sides, Quadratus lumborum both sides, Psoas major both sides, Tensor fascia latae both sides
Organ relationship (T2-L2, Sacrum, n. Vagus)
Related joints
Associated muscles
Manual and practical therapy strategies that will help you find the root cause(s) and achieve faster and better results with your clients.
Functional Rehab Academy is a part of:
Move2Peak Academy ApS, Denmark
contact@functionalrehabacademy.com