Neck Muscles Flashcards
1
Q
A
STERNOCLEIDOMASTOID
ORIGIN
Sternal head: Top of manubrium of the sternum Clavicular head: Medial one-third of the clavicle
INSERTION
Mastoid process and lateral superior nuchal line of the occiput of the skull
ISOLATED FUNCTION
Concentric Action
Cervical flexion, rotation, and lateral flexion
INTEGRATED FUNCTION
Eccentric Action
Cervical extension, rotation, and lateral flexion
Isometric Action
Stabilizes the cervical spine and acromioclavicular joint
INNERVATION
Cranial nerve XI
2
Q
A
SCALENES
ORIGIN
Transverse processes of C3–C7
INSERTION
First and second ribs
ISOLATED FUNCTION
Concentric Action
Cervical flexion, rotation, and lateral flexion and assists rib elevation during inhalation
INTEGRATED FUNCTION
Eccentric Action
Cervical extension, rotation, and lateral flexion
Isometric Action
Stabilizes the cervical spine
INNERVATION
Ventral rami (C3–C7)
3
Q
A
LONGUS COLLI
ORIGIN
Anterior portion of T1–T3
INSERTION
Anterior and lateral C1
ISOLATED FUNCTION
Concentric Action
Cervical flexion, lateral flexion, and ipsilateral rotation
INTEGRATED FUNCTION
Eccentric Action
Cervical extension, lateral flexion, and contralateral rotation
Isometric Action
Stabilizes the cervical spine
INNERVATION
Ventral rami (C2–C8)
4
Q
A
LONGUS CAPITIS
ORIGIN
Transverse processes of C3–C6
INSERTION
Inferior occipital bone
ISOLATED FUNCTION
Concentric Action
Cervical flexion and lateral flexion
INTEGRATED FUNCTION
Eccentric Action
Cervical extension
Isometric Action
Stabilizes the cervical spine
INNERVATION
Ventral rami (C1–C3)
