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.
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's 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
-<li>venous<ul><li><a href="/articles/vertebral-vein">Vertebral vein</a></li></ul>- +<li>venous<ul><li><a href="/articles/vertebral-vein">vertebral vein</a></li></ul>
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