Muscle Chart: Transversospinalis Group

Question 1

Semispinalis

Origin, Insertion, Innervation, Blood Supply

Answer 1

Attachment: Transverse processes of C4-T5 extending cranially to attach between the inferior and superior nuchal lines (capitis) and spinous process C2 (cervicis)

Innervation: Dorsal rami of spinal nerves

Blood Supply: Deep cervical artery

Question 2

Semispinalis Movements

Answer 2

Extend spine and head on neck

Question 3

Multifindus

Origin, Insertion, Innervation, Blood Supply

Answer 3

Attachment: Transverse process extending 2-4 spinal segments to insert onto the spinous processes. Run cranially from sacrum to cervical vertebrae

Innervation: Dorsal rami of spinal nerves

Blood Supply: Lumbar artery

Question 4

Multifindus Movements

Answer 4

Unilaterally: Rotate vertebral column to opposite side

Bilaterally: Extend the vertebral column

Question 5

Rotatores

Origin, Insertion, Innervation, Blood Supply

Answer 5

Attachments: Transverse process of lumbar spine to spinous process 1-2 segments above. Located in thoracic and cervical regions.

Innervation: Dorsal rami of spinal nerves

Blood Supply: Intercostal arteries

Question 6

Rotatores Movements

Answer 6

Unilaterally: Rotate vertebral column to opposite side

Bilaterally: Extend the vertebral column