OEX: Back and Vertebral Column

Splenius Capitis Origin

Ligamentum nuchae and upper thoracic spinous processes

Splenius Capitis Insertion

Mastoid process and superior nuchal line

Splenius Capitis Function

Extends head and neck; produces ipsilateral rotation and lateral flexion

Splenius Capitis Innervation

Posterior rami of cervical spinal nerves

Splenius Cervicis Origin

Ligamentum nuchae and upper thoracic spinous processes

Splenius Cervicis Insertion

Upper cervical transverse processes

Splenius Cervicis Function

Extends head and neck; produces ipsilateral rotation and lateral flexion

Splenius Cervicis Innervation

Posterior rami of cervical spinal nerves

Iliocostalis Origin

Common erector spinae tendon

Iliocostalis Insertion

Ribs and/or transverse or spinous processes according to column

Iliocostalis Function

Extends and laterally flexes vertebral column

Iliocostalis Innervation

Posterior rami of spinal nerves

Longissimus Origin

Common erector spinae tendon

Longissimus Insertion

Ribs and/or transverse or spinous processes according to column

Longissimus Function

Extends and laterally flexes vertebral column

Longissimus Innervation

Posterior rami of spinal nerves

Spinalis Origin

Common erector spinae tendon

Spinalis Insertion

Ribs and/or transverse or spinous processes according to column

Spinalis Function

Extends and laterally flexes vertebral column

Spinalis Innervation

Posterior rami of spinal nerves

Semispinalis Capitis Origin

Transverse processes

Semispinalis Capitis Insertion

Spinous processes several levels superior

Semispinalis Capitis Function

Stabilizes

Semispinalis Capitis Innervation

Posterior rami of spinal nerves

Semispinalis Cervicis Origin

Transverse processes

Semispinalis Cervicis Insertion

Spinous processes several levels superior

Semispinalis Cervicis Function

Stabilizes

Semispinalis Cervicis Innervation

Posterior rami of spinal nerves

Multifidus Origin

Transverse processes

Multifidus Insertion

Spinous processes several levels superior

Multifidus Function

Stabilizes

Multifidus Innervation

Posterior rami of spinal nerves

Rotatores Origin

Transverse processes

Rotatores Insertion

Spinous processes several levels superior

Rotatores Function

Stabilizes

Rotatores Innervation

Posterior rami of spinal nerves