Origin: xiphoid process, ribs 10-12, costal cartilages 5-9, lumbar vertebrae
Insertion: central tendon (a tendon in the center of the disc shaped muscle)
Action: pulls central tendon down, enlarging thoracic cavity and causing inspiration
Bone of Origin: sternum, ribs, vertebrae
Insertion: central tendon (a tendon in the center of the disc shaped muscle)
Action: pulls central tendon down, enlarging thoracic cavity and causing inspiration
Bone of Origin: sternum, ribs, vertebrae