1 — Iliocostalis lumborum; 2 — External intercostal muscle; 3 — Thoracic part; 4 — Iliocostalis cervicis; 5 — Semispinalis cervicis; 6 — Interspinales cervicis; 7 — Obliquus capitis inferior; 8 — Rectus capitis posterior major; 9 — Obliquus capitis superior; 10 — Rectus capitis posterior minor; 11 — Semispinalis capitis; 12 — Longissimus capitis; 13 — Spinalis capitis; 14 — Spinalis cervicis; 15 — Spinalis thoracis; 16 — Longissimus thoracis; 17 = 3 + 15 + 16 — Erector spinae, thoracic part; 18 — Internal oblique
