| 释义 |
semispinalis thoracis (muscle) sem·i·spi·na·lis tho·ra·cis (mus·cle) [TA] origin, transverse processes of fifth to eleventh thoracic vertebrae; insertion, spinous processes of first four thoracic and fifth and seventh cervical vertebrae; action, extends vertebral column; nerve supply, dorsal primary rami of cervical and thoracic spinal nerves. Synonym(s): musculus semispinalis thoracis [TA], musculus semispinalis dorsi, semispinal muscle of thorax |