The lateral flexion of head and cervical spine

The lateral flexion of head and cervical spine is a movement in which your head and neck bend to one side of the body.
This motion includes:
Anterior intertransversarii muscles
Posterior intertransversarii muscles
Trapezius muscle
Sternocleidomastoid muscle
Iliocostalis colli muscle
Levator scapulae muscle
Longissimus capitis muscle
Longissimus colli muscle
Scalene anterior muscle
Scalene posterior muscle
Scalene medius muscle
Semispinalis capitis muscle
Splenius capitis muscle
Splenius colli muscle