Scalene muscles
Disclosures
- updated 16 Oct 2022:
Nothing to disclose
Updates to Article Attributes
Body
was changed:
The scalene muscles are a group of three closely related neck muscles.
Summary
- origin: transverse processes of mid to lower cervical vertebrae (C2-C7).
- insertion: first or second ribs. Anterior and middle inserts on 1st rib whereas posterior attaches on 2nd rib.
- blood supply: ascending cervical artery
- innervation: ventral rami of cervical nerves (C3-C8).
-
action
- accessory muscles of inspiration
- unilateral: neck rotation
- bilateral: lateral neck rotation and flexion
-<p>The <strong>scalene muscles</strong> are a group of three closely related neck <a title="Muscles" href="/articles/skeletal-muscle">muscles</a>.</p><ul>-<li><a title="Anterior scalene" href="/articles/scalenus-anterior-muscle-1">anterior scalene muscles</a></li>-<li><a title="Middle scalene" href="/articles/scalenus-medius-muscle">middle scalene muscles</a></li>-<li><a title="Posterior scalene muscle" href="/articles/scalenus-posterior-muscle">posterior scalene muscles</a></li>- +<p>The <strong>scalene muscles</strong> are a group of three closely related neck <a href="/articles/skeletal-muscle">muscles</a>.</p><ul>
- +<li><a href="/articles/scalenus-anterior-muscle-1">anterior scalene muscles</a></li>
- +<li><a href="/articles/scalenus-medius-muscle">middle scalene muscles</a></li>
- +<li><a href="/articles/scalenus-posterior-muscle">posterior scalene muscles</a></li>
-<strong>o</strong><strong>rigin</strong>: transverse processes of mid to lower <a title="Cervical vertebrae" href="/articles/cervical-spine">cervical vertebrae</a>-</li>- +<strong>o</strong><strong>rigin</strong>: transverse processes of mid to lower <a href="/articles/cervical-spine">cervical vertebrae</a> (C2-C7). </li>
-<strong>insertion</strong>: <a title="First rib" href="/articles/first-rib">first</a> or <a title="Ribs" href="/articles/ribs">second ribs</a>-</li>- +<strong>insertion</strong>: <a href="/articles/first-rib">first</a> or <a href="/articles/ribs">second ribs</a>. Anterior and middle inserts on 1st rib whereas posterior attaches on 2nd rib. </li>
-<strong>innervation</strong>: ventral rami of cervical nerves</li>- +<strong>innervation</strong>: ventral rami of cervical nerves (C3-C8). </li>
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