ACTIONS: Movers of the Vertebral Column

Identify the main action for the TRANSVERSUS ABDOMINIS muscle.

• compression of the abdomen/support of torso ("suck in your gut")

• flexion of the vertebral column

• extension of the vertebral column

• lateral flexion of the vertebral column

• right/left rotation of the vertebral column

Identify the main action for the RECTUS ABDOMINIS muscle.

• compression of the abdomen/support of torso ("suck in your gut")

• flexion of the vertebral column

• extension of the vertebral column

• lateral flexion of the vertebral column

• right/left rotation of the vertebral column

Identify the THREE actions for the INTERNAL OBLIQUES.

• flexion of the vertebral column (from bilateral contraction)

• extension of the vertebral column (from bilateral contraction)

• lateral flexion of the vertebral column (from unilateral contraction)

• right/left rotation of the vertebral column ( from unilateral contraction)

Identify the THREE actions for the EXTERNAL OBLIQUES.

• flexion of the vertebral column (from bilateral contraction)

• extension of the vertebral column (from bilateral contraction)

• lateral flexion of the vertebral column (from unilateral contraction)

• right/left rotation of the vertebral column ( from unilateral contraction)

Identify the main action for the ERECTOR SPINAE group

• flexion of the vertebral column

• extension of the vertebral column

• lateral flexion of the vertebral column

• right/left rotation of the vertebral column

Identify the UNILATERAL action for the QUADRATUS LUMBORUM muscle. (unilateral means one side only)

• flexion of the vertebral column

• extension of the vertebral column

• lateral flexion of the vertebral column

• right/left rotation of the vertebral column