scalenus posterior muscle
A
cross-section diagram of the human neck at the level of C6 showing the fascia compartments, muscles, organs, bone, and major arteries, veins, and nerves.
The scalenus posterior (posterior scalene) is one of the three scalene muscles in the neck.
Summary
- origin: transverse processes of lower two or three cervical vertebrae (C5-C7)
- insertion: outer surface of second rib
- action:
- raises second rib (respiratory inspiration)
- acting together: neck flexion
- acting on one side: lateral neck flexion and rotation
- nerve supply: ventral rami of cervical nerves C6-C8 from the cervical plexus
Gross anatomy
Relations
- anteriorly: first rib
- posteriorly: second rib
- medially: pleural dome (at level of T1/T2)
- laterally: upper digitation of serratus anterior muscle
Siehe auch:
und weiter:
Assoziationen und Differentialdiagnosen zu scalenus posterior muscle:
