Deep dissection on back

Erector spinae muscle group

Iliocostalis lumborum muscle

lliocostalis cervicis muscle

Lliocostalis thoracic

Longissimus capitis muscle

Longissimus cervicis muscle

Longissimus thoracis muscle

Middle scalene

Multifidis muscle

Posterior scalene muscle

Quadratus lumborum muscle

Semispinalis capitis

Spinalis cervicis

Spinalis thoracis muscle