dorsal trunk AOIN

Question 1

Splenius Capitis

Answer 1

A: unilateral - rotate head and neck to same side, laterally flex head and neck to same side
: bilateral - extend head and neck
O: inferior 1/2 of ligamentum nuchae
I: mastoid process and lateral superior nuchal line
N: cervical

Question 2

Splenius Cervicis

Answer 2

A: unilateral - rotate head and neck to same side, laterally flex head and neck to same side
: bilateral - extend head and neck
O: spinous process of T3-T6
I: transverse process of C1-C3
N: cervical

Question 3

Rectus Capitus Posterior Major

Answer 3

A: rock and tilt head back into extension, rotate head to same side
O: spinous process of axis
I: inferior nuchal line
N: suboccipital nerve

Question 4

Rectus Capitus Posterior Minor

Answer 4

A: rock and tilt head back into extension
O: tubercle of posterior arch of atlas
I: inferior nuchal line
N: suboccipital nerve

Question 5

Oblique Capitus Superior

Answer 5

A: rock and tilt head back into extension, laterally flex head to same side
O: transverse process of atlas
I: between nuchal lines
N: suboccipital nerve

Question 6

Oblique Capitus Inferior

Answer 6

A: rotate head to same side
O: spinous processes of axis
I: transverse processes of atlas
N: suboccipital nerve

Question 7

Spinalis

Answer 7

A: unilateral - laterally flex vertebral column to same side
: bilaterally - extend vertebral column
O: spinous processes of upper lumbar and lower thoracic, ligamentum nuchae of C7
I: spinous processes of upper thoracic, spinous processes of C2-7
N: spinal

Question 8

Longissimus

Answer 8

A: unilateral - laterally flex vertebral column to same side
: bilaterally - extend vertebral column
O: common tendon, transverse processes of upper thoracic
I: lower 9 ribs and transverse processes of thoracic, transverse processes of cervical, mastoid
N: spinal

Question 9

Iliocostalis

Answer 9

A: unilateral - laterally flex vertebral column to same side
: bilaterally - extend vertebral column
O: common tendon, posterior surface of ribs 1-12
I: transverse processes of L1-3 and posterior surface of ribs 6-12, posterior surface of ribs 1-6, transverse processes of lower cervicals
N: spinal

Question 10

Multifidi

Answer 10

A: unilateral - rotate vertebral column to opposite side
: bilateral - extend vertebral column
O: sacrum and transverse processes of lumbar to cervical
I: spinous processes of lumbar to C2, span 2-4 vertebra
N: spinal

Question 11

Rotatores

Answer 11

A: unilateral - rotate vertebral column to opposite side
: bilateral - extend vertebral column
O: transverse processes of lumbar to cervical
I: spinous processes of lumbar to C2, span 1-2 vertebra
N: spinal

Question 12

Semispinalis Capitis

Answer 12

A: extend vertebral column and head
O: transverse processes of C4-T5
I: between superior and inferior nuchal lines
N: cervical

Question 13

Quadratus Lumborum

Answer 13

A: unilateral - laterally tilt pelvis, laterally flex vertebral column to same side, assist to extend vertebral column
: bilateral - flex last rib during forced inhalation/exhalation
O: posterior iliac crest
I: last rib and transverse processes of L1-4
N: lumbar plexus T12,L1,2,3

Question 14

Intertaversarii

Answer 14

A: unilateral - laterally flex vertebral column to same side
: bilateral - extend vertebral column
O & I: cervical - transverse processes of C2-7
: lumbar - transverse processes fo L1-5
N: spinal

Question 15

Interspinalis

Answer 15

A: extend vertebral column
O & I: cervical - spinous processes of C2-T3
: Lumbar - spinous processes of T12-L5
N: spinal