Middle scalene
The scalenus medius (middle scalene) muscle is one of the three scalene muscles in the neck.
Summary
- origin: transverse processes of lower six cervical vertebrae (C2-C7)
- insertion: upper surface of first rib
- action (similar to scalenus anterior muscle)
- raises first rib (respiratory inspiration)
- acting bilaterally: neck flexion
- acting unilaterally: lateral neck flexion and rotation
- nerve supply: ventral rami of cervical nerves C3-C8 from the cervical plexus
Gross anatomy
Relations
- anteriorly
- scalene triangle (between scalenus anterior, scalenus medius and first rib)
- roots of brachial plexus (C6, C7 and C8)
- subclavian artery
- posteriorly
- medially
- vertebral artery
- vertebral vein
- longus colli muscle
Siehe auch:
und weiter:
Assoziationen und Differentialdiagnosen zu Musculus scalenus medius:
