Neck Anatomy

• Posted on August 9, 2011
• by Dawn
• in Anatomy, Human Body
• No Comments.

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