ANATOMY IN A NUTSHELL. 



303 



The posterior branch of the second cervical nerve leaves the spinal (anal 



below the Inferior oblique between the posterior arch of the atlas and the 

 lamina of the axis. This branch is larger than any other posterior branch in 

 the cervical region and is three or four times as large as the anterior branches. 

 It sends a twig to the Inferior and receives a branch from the first cervical nerve. 

 It divides into a small external division wihch supplies tin- Complexus and 

 Trachelo-mastoid and Splenius and gives a twig to the Inferior oblique, and a 



PLATE (XXXV. 



EPIGLOTTIS 



CRICOID CARTILAGE 



THYROID 



ARYTENO-EPIGLOjTTIDEAN FOLD^t"^ /~f CARTILAGE I 



\ k ^ ^C^- ^ ) ( i SANTORINI 



ARYTENOIDEUS OBLIQUUS 



\ i 

 ARYTENOIDEUS TRANSVERSUS? 



MUSCULAR PROCESS 



OF 

 ARYTENOID CARTILAGE. 



\ o ■ ; ' - & / 



CR1C0- ARYTENOIDEUS 

 ' - x -., ■"' -'//^ POSTICUS 



==« y 



Thyroid Cartilages. (Posterior View.) 



very large internal division which is the great occipital nerve — the internal 

 division of the posterior branch of the second cervical nerve. After this nerve 

 crosses the Inferor oblique it pierces the Complexus, the Trapezius and the 

 deep fascia beneath the superior curved line of the occipital bone. It joins a 

 filament from the posterior branch of the third cervical nerve and ascends on 

 the back of the head with the occiptial artery and supplies the integument as 

 far as the vertex, communicating with the small occipital. It gives a muscular 

 branch to the Complexus and an auricular branch to the back part of the ear. 

 (Plate CCXVI). 



The superficial origin of the third cervical nerve may be as high as a little 

 below THE POSTERIOR ARCH OF THE ATLAS OT as low as THE 3\ NOTION OF THE 



upper two-thirds and lower third of spine of \xis. The anterior branch 

 of this nerve is larger than the posterior one. (Principle [I,Page 26). It is also 

 larger than the anterior branch of the second cervical nerve (double the size.) 

 After leaving the intervertebral foramen, it passes downward and out- 

 ward beneath the Sterno-cleido-mastoid and divides into an ascending branch 

 and a descending one. The ascending branch joins the anterior branch of 

 second cervical nerve, in front of the Scalenus anticus. The most of the great 



