Transversopinales

Question 0

Insertion of Semispinalis

Answer 0

Occipital bone
Spinous processes in upper thoracic and cervical regions
Spanning 4-6 segments

Question 1

Origin of Semispinalis

Answer 1

Transverse processes of C4-T10

Thoracis, cervicis, and capitis

Question 2

Main action of Semispinalis

Answer 2

Extends head and thoracic and cervical regions

Rotates contralaterally

Question 3

Origin of Multifidus

Answer 3

Posterior sacrum
Posterior superior iliac spine of ilium
Aponeurosis of erector spinae
Sacro-iliac ligaments
Mammilary processes of lumbar region
Transverse processes of thoracic region
Articular processes of the C4-C7

Question 4

Insertion of Multifidus

Answer 4

Fibers pass obliquely superomedially to entire length of spinous processes of vertebrae located ~ 2-4 segments superior to the origin

Question 5

Action of Multifidus

Answer 5

Rotates contralateral side

Stabilizes vertebrae during local movements of vertebral column

Question 7

Origin of the Rotatores

Answer 7

Transverse processes (best in thoracic region)
(Brevis and longus)

Question 8

Insertions of the Rotatores

Answer 8

Junction of lamina and transverse process or spinous process of vertebra immediately (brevis) or two (longus) superior to vertebra of origin

Question 9

Action of Rotatores

Answer 9

Organs of proprioception
Stabilize vertebrae
Assist with local extension and rotatory movements of vertebral column

Question 16

Nerve supply for all muscles

Answer 16

Posterior rami of spinal nerves