MUSCLES OF THE BACK. 199 



COMPLEXUS. 



Origin By six or seven tendons from transverse 



processes of fifth, sixth, and seventh cervical and 



first, second, and third dorsal. 

 Insertion Between superior and inferior curved lines 



of occipital by broad insertion. 

 Nerves Posterior cervical. 

 BIVENTER CERVICIS. 



Origin From transverse processes of third, fourth, 



and fifth cervical vertebrae. 

 Insertion Superior curved line of occipital to the 



inner side of complexus. 

 Nerves Posterior cervical. 



Muscles of the Fifth Layer. 



SEMISPINALIS DORSI. 



Origin Transverse processes of sixth, seventh, eighth, 



ninth, tenth, eleventh, and twelfth dorsal vertebrae. 

 Insertion Into the spinous processes of the first, 



second, third, and fourth dorsal vertebrae and sixth 



and seventh cervical. 

 Nerves Posterior dorsal. 

 SEMISPINALIS COLLI. 



Origin Transverse processes of first, second, third, 



and fourth dorsal vertebrae and articular processes 



of lower three cervical vertebrae. 

 Insertion Spinous processes of the second, third, 



fourth, and fifth cervical vertebrae. 

 Nerves Posterior dorsal. 

 MULTIFIDUS SPIN^E. 



Origin Lies in the groove at the side of the spinous 



processes attached to the spinous, articular, and 



transverse processes from sacrum to axis. 

 Insertion The tendons pass upward and inward, and 



