Deep Back MOD

Iliocostalis origin

• crest of the sacrum; spinous processes of the lumbar and lower thoracic vertebrae; iliac crests; angles of the ribs

• transverse processes of the lumbar, thoracic, and lower cervical vertebrae

• spinous process of the upper lumbar , lower thoracic, and 7th cervical vertebrae

• posterior surface of the sacrum and the ilium and the transverse processes of the lumbar, thoracic and lower cervical vertebrae

Longissimus origin

• crest of the sacrum; spinous processes of the lumbar and lower thoracic vertebrae; iliac crests; angles of the ribs

• transverse processes of the lumbar, thoracic, and lower cervical vertebrae

• spinous process of the upper lumbar , lower thoracic, and 7th cervical vertebrae

• posterior surface of the sacrum and the ilium and the transverse processes of the lumbar, thoracic and lower cervical vertebrae

spinalis origin

• crest of the sacrum; spinous processes of the lumbar and lower thoracic vertebrae; iliac crests; angles of the ribs

• transverse processes of the lumbar, thoracic, and lower cervical vertebrae

• spinous process of the upper lumbar , lower thoracic, and 7th cervical vertebrae

• posterior surface of the sacrum and the ilium and the transverse processes of the lumbar, thoracic and lower cervical vertebrae

Multifidus origin

• crest of the sacrum; spinous processes of the lumbar and lower thoracic vertebrae; iliac crests; angles of the ribs

• transverse processes of the lumbar, thoracic, and lower cervical vertebrae

• spinous process of the upper lumbar , lower thoracic, and 7th cervical vertebrae

• posterior surface of the sacrum and the ilium and the transverse processes of the lumbar, thoracic and lower cervical vertebrae

Iliocostalis Insertion

• angles of the ribs; transverse processes of the cervical vertebrae

• transverse processes of the vertebra above the vertebra of origin and the mastoid process of the temporal bone

• spinous processes of the upper thoracic and the cervical vertebrae

• spinous processes of the lumbar, thoracic and cervical vertebrae

Longissimus Insertion

• angles of the ribs; transverse processes of the cervical vertebrae

• transverse processes of the vertebra above the vertebra of origin and the mastoid process of the temporal bone

• spinous processes of the upper thoracic and the cervical vertebrae

• spinous processes of the lumbar, thoracic and cervical vertebrae

Spinalis Insertion

• angles of the ribs; transverse processes of the cervical vertebrae

• transverse processes of the vertebra above the vertebra of origin and the mastoid process of the temporal bone

• spinous processes of the upper thoracic and the cervical vertebrae

• spinous processes of the lumbar, thoracic and cervical vertebrae

Multifidus Insertion

• angles of the ribs; transverse processes of the cervical vertebrae

• transverse processes of the vertebra above the vertebra of origin and the mastoid process of the temporal bone

• spinous processes of the upper thoracic and the cervical vertebrae

• spinous processes of the lumbar, thoracic and cervical vertebrae

Iliocostalis action:

• extends the vertebral column and bends it to one side

• extends the vertebral column and head; rotates the head toward same side

• extends the vertebral column

• extends the vertebral column; rotates it toward opposite side

Longissimus action:

• extends the vertebral column and bends it to one side

• extends the vertebral column and head; rotates the head toward same side

• extends the vertebral column

• extends the vertebral column; rotates it toward opposite side