304 



ANATOMY IX A NUTSHELL. 



auricular, superficial cervical, one of the communicans hypoglossi, a branch to 

 the supraclavicular nerves, a filament to the phrenic, and muscular branches to 

 the Levator anguli scapula 1 and Trapezius, and sometimes a branch to the 

 Scalenus medius. all come from this nerve. 



The posterior branch of the third cervical nerve is smaller than that of the 

 second, but larger than that of the fourth. It divides at the outer border of 

 the Semispinalis colli into internal and external divisions. The greater portion 

 of the internal division of the posterior branch of the third cervical nerve is the 

 smallest or third occipital. The internal division runs between the Complexus 

 and Semispinalis muscles, supplying them, th< n pierces the Trapezius to supply 

 the integumenl of the back of tin n< ck. It communicates with the great occipi- 



PLATE CXXXVI. 



THYRO-EPIGLOTTlDEAN 



LIGAMENT 



CARTILAGO TRITICEA 



SUPERIOR CORNU OF 

 THYROID CARTILAGE 



CARTILAGE OF SAN-TOR Nl 



SCULAR PROCESS OF 

 RYTEN0I0 CARTILAGE 



INFERIOR CORNU OF 

 THYROID CARTILAGE 



Arytenoid Caktilage and Epiglottis. 



tal nerve and supplies the skin of the scalp in the region of the external occipital 

 protuberance. The external division joins the posterior branch of the second 

 to supply the Splenius, Trachelo-mastoid and Complexus. (Plate CXII.) 



LESSON LXXXVI. 



<i i,\ [cal Plexus. (Plate CXIll). 



The Cervical plexus is formed by the anterior branches of the first four 



cervical nerves. Each of these four nerves receives a gray ramus communicans 



from the si perior i ervical ganglion. This plexus is situated in the upper 



part of the side of the neck opposite the four upper cervical vertebrae, and upon 



