What does the longus colli muscle do?
Function. As well as acting with the other cervical flexors to produce neck flexion, Longus Colli has been shown to have a postural function on cervical curvature, counteracting the lordosis increment related to the weight of the head and to the contraction of the posterior cervical muscles.
What action is produced during bilateral contraction of the anterior scalene sternocleidomastoid and longus colli?
flexion
Unilateral contraction produces lateral flexion of the neck on the same (ipsilateral) side and lateral rotation of the head to the opposite (contralateral) side. Bilateral contraction of the sternocleidomastoid muscles produce flexion of the neck, drawing the head towards the chest.
What is the anatomical action of the longus capitis and longus colli muscles?
The longus capitis muscle works synergistically with longus colli and scalene muscles as a weak flexor of the head and cervical spine. The action of the muscle is assisted by gravity and by the powerful sternocleidomastoid muscles.
Can you palpate longus colli?
Palpation Assessment of the Longus Colli and Longus Capitis The longus muscles are deep and located in a sensitive region of the body, but careful palpation can yield successful assessment and treatment of much of the musculature.
Where does the longus colli muscle insertion?
| Longus colli muscle | |
|---|---|
| Insertion | Anterior arch of the atlas |
| Artery | Ascending pharyngeal artery and vertebral arteries |
| Nerve | C2–C6 |
| Actions | Flexes the neck and head |
What are the scalene muscles?
Scalene are a group of three pairs of muscles in the lateral neck: scalenus anterior, scalenus medius and scalenus posterior. Sometimes a fourth muscle, the scalenus minimus is present behind the lower portion of the scalenus anterior.
What is the action of the Scalenes?
Function. The action of the anterior and middle scalene muscles is to elevate the first rib, they also flexes and laterally bends the neck to same side. The action of the posterior scalene is to elevate the second rib and tilt the neck to the same side.
Where does the longus colli attach?
This muscle section inserts onto the anterior surface of bodies of second, third and fourth cervical vertebrae (C2-C4).
Where are scalene muscles?
The scalene muscles are located deep in relation to the sternocleidomastoid muscle, lateral to the cervical spine, connecting the vertebrae to the first two ribs. The deep fascia or prevertebral fascia envelop the scalene muscles.
What is the function of the longus capitis?
The longus capitis muscle functions to flex the head (Cagnie et al., 2010) and is innervated by branches of the anterior primary divisions of C1 to C3.