Ansa cervicalis
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The ansa cervicalis is a component of the cervical plexus which gives muscular branches to the geniohyoid muscle of the suprahyoid group and the infrahyoid muscles (sternohyoid, omohyoid, thyrohyoid, and sternothyroid muscles).
Gross anatomy
Roots
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Superiorsuperior root- derived from the anterior primary rami of C1
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Inferiorinferior 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
- branch to thyrohyoid
- branch to omohyoid
- branch to sternohyoid
- branch to sternothyroid
-<p>The <strong>ansa cervicalis</strong> is a component of the <a href="/articles/cervical-plexus">cervical plexus</a> which gives muscular branches to the geniohyoid muscle of the suprahyoid group and the infrahyoid muscles (sternohyoid, omohyoid, thyrohyoid, sternothyroid)</p><h4>Gross anatomy</h4><h5>Roots</h5><ul>-<li>Superior root<ul><li>derived from the anterior primary rami of C1</li></ul>- +<p>The <strong>ansa cervicalis</strong> is a component of the <a href="/articles/cervical-plexus">cervical plexus</a> which gives muscular branches to the <a href="/articles/geniohyoid-muscle">geniohyoid muscle</a> of the suprahyoid group and the <a href="/articles/infrahyoid-muscles">infrahyoid muscles</a> (sternohyoid, omohyoid, thyrohyoid and sternothyroid muscles). </p><h4>Gross anatomy</h4><h5>Roots</h5><ul>
- +<li>superior root<ul><li>derived from the anterior primary rami of C1</li></ul>
-<li>Inferior root<ul><li>derived from the anterior primary rami of C2 and C3</li></ul>- +<li>inferior root<ul><li>derived from the anterior primary rami of C2 and C3</li></ul>
-<li>branch to <a title="geniohyoid" href="/articles/geniohyoid">geniohyoid</a>- +<li>branch to <a href="/articles/geniohyoid">geniohyoid</a>
-<li>branch to <a title="thyrohyoid" href="/articles/thyrohyoid">thyrohyoid</a>- +<li>branch to <a href="/articles/thyrohyoid">thyrohyoid</a>
-<li>branch to <a title="omohyoid" href="/articles/omohyoid">omohyoid</a>- +<li>branch to <a href="/articles/omohyoid">omohyoid</a>
-<li>branch to <a title="sternohyoid" href="/articles/sternohyoid">sternohyoid</a>- +<li>branch to <a href="/articles/sternohyoid">sternohyoid</a>
-<li>branch to <a title="sternothyroid" href="/articles/sternothyroid">sternothyroid</a>- +<li>branch to <a href="/articles/sternothyroid">sternothyroid</a>
References changed:
- 1. McMINN. Lasts Anatomy Regional and Applied. CHURCHILL LIVINGSTONE. (2003) ISBN:B0084AQDG8. <a href="http://books.google.com/books?vid=ISBNB0084AQDG8">Read it at Google Books</a> - <a href="http://www.amazon.com/gp/product/B0084AQDG8">Find it at Amazon</a><span class="ref_v3"></span>
- McMINN. Lasts Anatomy Regional and Applied. CHURCHILL LIVINGSTONE. (2003) ISBN:B0084AQDG8. <a href="http://books.google.com/books?vid=ISBNB0084AQDG8">Read it at Google Books</a> - <a href="http://www.amazon.com/gp/product/B0084AQDG8">Find it at Amazon</a><span class="ref_v3"></span>
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- refs
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