ANTERIOR SCALENE
cervical transverse processes anterior 1st rib BA: Cervical flexion; stabilise the cervical spine; accessory muscle for inspiration UA: ipsilateral cervical lateral flexion ventral rami spinal nerves
MIDDLE SCALENE
cervical transverse processes lateral 1st rib BA: Cervical flexion; stabilise the cervical spine; accessory muscle for inspiration UA: ipsilateral cervical lateral flexion ventral rami spinal nerves
Posterior SCALENE
cervical transverse processes posterior 2nd rib BA: Cervical flexion; stabilise the cervical spine; accessory muscle for inspiration UA: ipsilateral cervical lateral flexion ventral rami spinal nerves