• Neck Anatomy

    Posted on August 9, 2011 by Dawn in Anatomy, Human Body.

    Trapezius

    O:  Medial 1/3 of the Superior Nuchal Line of

    the Occiput, Ligamentum Nuchae, and the

    Spinous Processes of C7 through T12

    I:  Upper Trapezius – Lateral 1/3 of the Superior

    border of the Clavicle

    Middle Trapezius – Acromion Process

    Lower Trapezius – Scapular Spine

    A:  Upper Trapezius – Elevates the scapula

    Middle Trapezius – Adducts the scapula

    Lower Trapezius – Depresses the scapula

     

    Splenius Capitis 

    O:  Spinous Processes of C7 through T4

    I:  Mastoid Process of the Temporal bone and Lateral Superior Nuchal Line of the Occiput

    A:  Extension, lateral flexion, and same-side rotation of neck and head

     

     

    Splenius Cervicis

    O:  Spinous Processes of T3 through T6

    I:  Transverse Processes of C1 through C3

    A:  Extension, lateral flexion, and same-side rotation of neck and head

     

     

    Levator Scapulae

    O:  Transverse processes of C1 – C4

    I:  Medial border of the Scapula above the scapular spine

    A:  Elevates the medial border of the scapula, lateral flexion of the neck and head

     

    Iliocostalis Cervicis

    O:  posterior aspect of upper 6 ribs

    I:  transverse processes of C4 – C6

    A:  Rotates and extends vertebrae

     

    Longissimus Cervicis

    O:  transverse processes of T1 – T6

    I:  transverse processes of C2 – C7

    A:  extends the vertebrae