Ansa cervicalis
Updates to Article Attributes
Body
was changed:
The ansa cervicalis is a component of the cervical plexus which gives muscular branches to the geniohyoid muscle of the suprahyoid group and all 4 of the infrahyoid muscles.
Gross anatomy
Roots
- superior root: derived from the anterior primary rami of C1
- inferior root: derived from the anterior primary rami of C2 and C3
Course
- superior root
- passes with the hypoglossal nerve between rectus capitis anterior and rectus capitis lateralis muscles.
- leaves the hypoglossal nerve lateral to the occipital artery
- runs with the common carotid artery to join the inferior root
- inferior root
- pierces the prevertebral fascia at the level of C2/3
- passes around the internal jugular vein
- runs anteriorly to meet with the superior root anterior to the common carotid artery
Branches
- branch to geniohyoid
- branches to infrahyoid (strap) muscles
- branch to thyrohyoid
- branch to omohyoid
- branch to sternohyoid
- branch to sternothyroid
-<li>branch to <a href="/articles/omohyoid">omohyoid</a>- +<li>branch to <a title="Omohyoid muscle" href="/articles/omohyoid-muscle">omohyoid</a>
-<li>branch to <a href="/articles/sternohyoid">sternohyoid</a>- +<li>branch to <a title="Sternohyoid muscle" href="/articles/sternohyoid-muscle">sternohyoid</a>
-<li>branch to <a href="/articles/sternothyroid">sternothyroid</a>- +<li>branch to <a title="Sternothyroid muscle" href="/articles/sternothyroid-muscle">sternothyroid</a>
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