Posterior Scalene
Original Editor - Wendy Walker
Lead Editors - Kim Jackson, Wendy Walker, Evan Thomas, Daphne Jackson and WikiSysop
Description[edit | edit source]
Posterior Scalene, AKA Scalenus Posterior, is one of the lateral muscles of the neck, belonging to the Scalene group. It is deeply placed, lying behind Sternocleidomastoid.
Origin[edit | edit source]
C4 to 6
Posterior tubercles of the transverse processes of cervical vertebrae 4 to 6
Insertion[edit | edit source]
2nd Rib
Anterior surface of the 2nd rib, posterior to the tubercle for serratus anterior
Nerve Supply[edit | edit source]
Branchial Plexus C6 to 8
Branches of the ventral rami of cervical spinal nerves C6 to 8
Blood Supply[edit | edit source]
Ascending cervical artery and superficial cervical artery
Action[edit | edit source]
Acting from above: elevation of the 2nd rib
Acting from below, with Anterior and Middle Scalene cervical side flexion and rotation[1]
Function[edit | edit source]
Acting from above: acccessorymuscle of inspiration
Acting from below, cervical side flexion and rotation; if both sides acting, small degree of cervical flexion
Resources[edit | edit source]
References[edit | edit source]
- ↑ J Orthop Sports Phys Ther. 2002 Oct;32(10):488-96.fckLRActions of the scalene muscles for rotation of the cervical spine in macaque and human.fckLRBuford JA, Yoder SM, Heiss DG, Chidley JV
