Functional Anatomy of Major Muscles - Neck Musculature

Question 1

Sternocleidomastoid

Answer 1

Isolated function: concentric-cervical flexion, rotation, and lateral flexion
integrated function: eccentric-cervical extension, rotation, and lateral flexion
isometric-stabilizes the cervical spine and acromioclavicular joint

Question 2

Scalenes

Answer 2

Isolated function: concentrate-cervical flexion, rotation and lateral flexion; assists rib elevation during inhalation
integrated function: eccentric-cervical extension, rotation, and lateral flexion
isometric-stabilize the cervical spine

Question 3

Longus colli

Answer 3

Isolated function: concentrate-cervical flexion, lateral flexion, and ipsilateral rotation
integrated function: eccentric-cervical extension, lateral flexion, and contralateral rotation
isometric-stabilizes the cervical spine.

Question 4

Longus capitus

Answer 4

Isolated function: concentric-cervical flexion and lateral flexion
integrated function: eccentric-cervical extension
isometric-stabilizes the cervical spine