Origin: inferior border of rib above (ribs 1-11)
Insertion: superior border of rib below (ribs 2-12)
Action: pulls ribs up, elevating ribcage and enlarging chest cavity, causing inspiration
Joint/s Moved: rib to vertebra joints
Bone of Origin: rib
Bone of Insertion: rib
Insertion: superior border of rib below (ribs 2-12)
Action: pulls ribs up, elevating ribcage and enlarging chest cavity, causing inspiration
Joint/s Moved: rib to vertebra joints
Bone of Origin: rib
Bone of Insertion: rib