Muscles of the Neck (cervical vertebrae) OIA's

Question 1

Sternocleidomastoid

Answer 1

Origin: 2 heads: manubrium of sternum and clavicle
Insertion: mastoid process of temporal bone
Action: flexes and rotates cervical vertebral column

Question 2

Erector Spinae Group(I Like Spines)
- spinalis
- longissimus
- Iliocostalis

Answer 2

Action: Extends and laterally flexes vertebral column, head and neck

Question 3

Intertransversarii

Answer 3

Origin: Transverse processes of vertebrae
Insertion: transverse process of vertebrae above
Action: laterally flexes vertebral column

Question 4

Interspinales

Answer 4

Origin: Spinous Process of vertebra
Insertion: spinous process of vertebra above
Action: extends vertebral column