196 PRACTICAL ANATOMY. 



the first, second, third, and fourth cervical ver- 

 tebrae. 



Insertion Superior angle of scapula and posterior 

 border for one inch. 



Nerve Brachial plexus. 

 RHOMBOIDEUS MAJOR. 



Origin Spines of the first, second, third, and fourth 

 dorsal vertebrae. 



Insertion Passes downward and outward, and is 

 inserted into the vertebral border of scapula. 



Nerve Brachial plexus. 

 RHOMBOIDEUS MINOR. 



Origin Lower part of ligamentum nuchae and spine 

 of seventh cervical. 



Insertion Passes outward and downward, and is in- 

 serted into the vertebral border of the scapula above 

 the rhomboideus major. 



Nerve Brachial plexus. 



Muscles of the Third Layer. 

 SERRATUS POSTICUS SUPERIOR. 



Origin Lower part of ligamentum nuchae, spine of 

 last cervical and spines of upper two dorsal 

 vertebrae. 



Insertion Passes downward and outward, and is 

 inserted into the posterior surfaces of the second, 

 third, fourth, and fifth ribs, beyond their angles. 



Nerves Posterior branches of cervical. 

 SERRATUS POSTICUS INFERIOR. 



Origin Spines of eleventh and twelfth dorsal and 

 first and second lumbar vertebrae. 



Insertion Passes outward and upward, and is in- 

 serted into the posterior surface of the ninth, 

 tenth, eleventh, and twelfth ribs. 



Nerves Dorsal, 



