PRELIMINARY OPERATIONS 



87 



peedles 

 how h> tear 

 Fascist union, 

 between Sferno- 

 hyo/c/eus muscles 



l~ig. 84. Separation of the borders of the sternohyoid muscles with two aneurism 



needles. 



.Carotid, sheath. 



Conraininq Vaqo- 

 sy/npafnerfc neri/e 

 ^ Carol-id artery 



M. Sterno-hyoideus 



Fig. 85. The trachea is exposed and the carotid sheath is seen just to the postero- 



lateral border of the windpipe. 



