10-21-11 Friday

Anatomy

Erector Spinae Group

Spinalis
O: -spinous processes of the upper lumbar and lower thoracic vertebrae
-ligamentum nuchae, spinous process of c7
I: -spinous processes of upper thoracic
-spinous processes of cervicals, except c1 (it doesn't have a spinous process)
A: unilaterally- laterally flex vertebral column to the same side
bilaterally- extend the vertebral column

Longissimus
O: -common tendon
-transverse processes of uper 5 throacic vertebrae
I: -lower 9 ribs and transverse processes
-transverse processes of cervical vertebrae and mastoid process of temporal bone
A: unilaterally- laterally flex vertebral column to the same side
bilaterally- extend the vertebral column

Iliocostalis
O: -common tendon
-posterior surface of ribs 1-2
I: -transvers processes of lumbar vertebrae 1-3
-posterior surface of ribs 1-6
-transverse processes of lower cervicals

Transversopinalis group

Multifidi
O: sacrum and transverse processes of lumbar through cervical vertebrae
I: spinous processes of lumbar vertebrae through second cervical vertebra (spanning 2 to 4 vertebrae)
A: unilat.- rotate the vertebral column to the opposite side
bilat- extend the vertebral column

Rotatores
O: Transverse processes of lumbar through cervical vertebrae
I: spinous processes of lumbar vertebrae through second cervical vertebra (spanning 1 to 2 vertebrae)
A: unilat- rotate the vertebral column to the opposite side
bilat- extend the vertebral column

Semispinalis Capitis
O: transverse processes of c4 to t5
I: between the superior and inferior nuchal lines of the occiput
A: extend the vertebral column and head

Splenius Capitis
O: inferior one-half of ligamentum nuchae and spinous processes of c7 to t4
I: mastoid process and lateral portion of superior nuchal line
A: unilat.- rotate the head and neck to the same side
- laterally flex the head and neck
bilat.- extend the head and neck

Splenius Cervicis
O: spinous processes of t3 to t6
I: transverse processes of c1 to c3
A: unilat.- rotate the head and neck to the same side
- laterally flex the head and neck
bilat.- extend the head and neck


Suboccipitals

Rectus Capitis Posterior Major
O: spinous process of axis (c2)
I: inferior nuchal line of occiput
A: rock and tilt head back into extension
rotate head same side

Rectus Capitis Posterior Minor
O: tubercle of posterior arch of atlas (c1)
I: inferior nuchal line of occiput
A: rock and tilt head back into extension

Oblique Capitis Superior
O: transverse process of atlas (c1)
I: between nuchal lines of occiput
A: rock and tilt head back into extension
laterally flex head same side

Oblique Capitis Inferior
O: spinous process of c2
I: transverse process c1
A: rotate head same side