ANATOMY IX A NUTSHELL. 



275 



neath the insertion of the Splenitis capitis and the Sterno-cleido-mastoid. 



Action. — If both act, they extend the head backward. If only one acts it 

 turns the face toward the shoulder of same side. 



Complexus. — Description. — This muscle takes its name from the com- 

 plicated arrangement of its muscular bundles. 



Origix. — Tips of transverse processes of from two to seven upper dorsal 

 vertebra? and seventh cervical vertebra 1 , (2) articular processes of fourth, fifth, 

 and sixth cervical vertebrae. 



PLATE CXIV. 



PHRENIC NERVE 



SUPaAST'PULAR HERVE 



PNEUMOGASTRIC 



SUBCLAVIAN ARTERY 



INNOMINATE ARTERY 

 EXTERNAL JUGULAR VEIN 



MEDIAN 



*WSOil 0-SP1RAL N 



AXILLARY ARTERY 



MUSCULOCUTANEOUS 



■SUBSCAPULAR ARTERY. 



vpROFimni ARTERY 



Thyroid Axis axd Cords of Brachial Plexus. 



Insertion. — Into the innermost depression between the two curved lines 

 of the occipital bone 



ACTION. — If both act they draw the head backward, if only one ads it 

 draws the head to one side, and with the face turned to the opposite side. 



Biventer cervicis. — Description. — This muscle is one of the so-called 

 double bellied muscles, and is situated on the Inner side of the Complexus. 



Origin. — Transverse processes of from two to four upper dorsal vertebrae. 



Insertion. — Superior curved line of the occipital bone. 



Action. — This muscle is a helper to the Complexus. 



Spinalis colli. — Description. — This muscle is snail and connects tic 



