Colliscalene triangle
Updates to Article Attributes
Body
was changed:
The colliscalene triangle is an important anatomical region of the neck, situated medial to the scalenus anterior muscle.
It should not be confused with the scalene triangle which is located posterior to the scalenus anterior muscle.
Gross anatomy
Boundaries
- medial: lateral border of longus colli
- lateral: medial border of scalenus anterior
- inferior: first part of the subclavian artery
- apex: carotid tubercle (Chassaignac tubercle)
- roof: deep investing layer of cervical fascia
Contents
- arterial
- thyrocervical trunk
- inferior thyroid artery: arching over apex of triangle
- first part of vertebral artery
- venous
- nervous
- lymphatic
- thoracic duct (on left)
- right lymphatic duct (on right)
Variant anatomy
- additional vertebral vein passing through foramen transversarium of C7
- vertebral artery entering at C7
-<p>The <strong>colliscalene</strong> <strong>triangle</strong> is an important anatomical region of the neck, situated medial to the <a href="/articles/scalenus-anterior-muscle-1">scalenus anterior muscle</a>.</p><p>It should not be confused with the <a title="Scalene triangle" href="/articles/scalene-triangle">scalene triangle</a> which is located posterior to the scalenus anterior muscle. </p><h4>Gross anatomy</h4><h5>Boundaries</h5><ul>- +<p>The <strong>colliscalene</strong> <strong>triangle</strong> is an important anatomical region of the neck, situated medial to the <a href="/articles/scalenus-anterior-muscle-1">scalenus anterior muscle</a>.</p><p>It should not be confused with the <a href="/articles/scalene-triangle">scalene triangle</a> which is located posterior to the scalenus anterior muscle. </p><h4>Gross anatomy</h4><h5>Boundaries</h5><ul>
-<li>venous<ul><li><a href="/articles/vertebral-vein">vertebral vein</a></li></ul>- +<li>venous<ul><li><a title="Basivertebral veins" href="/articles/vertebral-venous-plexus-1">vertebral vein</a></li></ul>
-<li><a href="/articles/inferior-cervical-ganglion">inferior cervical (stellate) ganglion</a></li>-<li><a href="/articles/middle-cervical-ganglion">middle cervical ganglion</a></li>- +<li><a title="Stellate ganglion" href="/articles/stellate-ganglion">inferior cervical (stellate) ganglion</a></li>
- +<li><a title="middle cervical ganglion" href="/articles/middle-cervical-ganglion">middle cervical ganglion</a></li>
-<a title="Thoracic duct" href="/articles/thoracic-duct">thoracic duct</a> (on left)</li>- +<a href="/articles/thoracic-duct">thoracic duct</a> (on left)</li>
-<li>additional vertebral vein passing through <a href="/articles/foramen-transversarium">foramen transversarium</a> of C7</li>- +<li>additional vertebral vein passing through <a title="foramen transversarium" href="/articles/foramen-transversarium">foramen transversarium</a> of C7</li>
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