Name

Spinalis Thoracis

Pronunciation

(spi-NA-lus tho-RA-sus)

Origin/Proximal Attachment

Spinous processes of T11-L2; common tendinous origin

Insertion/Distal Attachment

Spinous processes of T4-8

Action/Relevance

Extension of the vertebral column

Innervation

Dorsal rami of thoracic nerves