21 Name the action and five muscles responsible for that action.
22 Name the two parts of a vertebral disk annulus fibrosusnucleus pulposus
23 Name the specific branch of this muscle. Longissimus
24 Name the muscle and its actions? Internal ObliqueWhat is the action of the whole muscle?Lumbar FlexionWhat are the actions of half of the muscle?Lumbar lateral Flexion and Lumbar rotation to the same side.