Neck Muscles

Question 1

Levator Scapulae Origin and Insertion

Answer 1

Origin: Transverse processes of C1-4
Insertion: Superior vertebral border of the scapulae

Question 2

Levator Scapulae Isolated and Integrated Function

Answer 2

Isolated Function: Concentrically accelerates cervical extension, lateral flexion, ipsilateral rotation when scapulae is anchored, Assists in elevation and downward rotation of the scapulae
Integrated Function: Eccentrically decelerates cervical flexion and contralateral cervical rotation and lateral flexion, eccentrically deceleration scapular depression and upward rotation when the neck is stabilized, stabilizes the cervical spine and scapulae

Question 3

Sternocleidomastoid Origin and Insertion

Answer 3

Origin: top of manubrium or sternum, medial one third of clavicle
Insertion: Mastoid process, lateral superior nuchal line of the occiput of the skull

Question 4

Sternocleidomastoid Isolated and Integrated Function

Answer 4

Isolated Function: concentrically accelerates cervical flexion, rotation, and lateral flexion
Integrated Function: eccentrically decelerates cervical extension, rotation, and lateral flexion, Isometrically stabilizes the cervical spine and acromioclavicular joint

Question 5

Scalenes Origin and Insertion

Answer 5

Origin: Transverse processes of C3-C7
Insertion: first and second ribs

Question 6

Scalenes Isolated and Integrated Function

Answer 6

Isolated Function: concentrically accelerates cervical flexion rotation, and lateral flexion, assists rib elevation during inhalation
Integrated Function: eccentrically decelerates cervical extension, rotation, and lateral flexion, isometrically stabilizes the cervical spine

Question 7

Longus Coli Origin and Insertion

Answer 7

Origin: Anterior portion of T1-T3
Insertion: Anterior and lateral C1

Question 8

Longus Coli Isolated and Integrated Function

Answer 8

Isolated Function: Concentrically accelerates cervical flexion, lateral flexion, and ipsilateral rotation
Integrated Function: Eccentrically decelerates cervical extension, lateral flexion, and contralateral rotation, isometrically stabilizes the cervical spine

Question 9

Longus Capitis Origin and Insertion

Answer 9

Origin: Transverse processes of C3-C6
Insertion: inferior occipital bone

Question 10

Longus Capitis Isolated and Integrated Function

Answer 10

Isolated Function: concentrically accelerates cervical flexion and lateral flexion
Integrated Function: eccentrically decelerates cervical extension, isometrically stabilizes the cervical spine