FEOG 255 



pituitary body, runs very near the Gasserian 

 ganglion, and supplies some of the eye mus- 

 cles. 



7. The seventh, or facial, arises immediately be- 

 hind the fifth, runs forward to the Gasserian 

 ganglion, and after leaving the cranium di- 

 vides into two principal branches, one of which, 

 the palatine nerve, supplies the roof of the 

 mouth, while the other or hyomandibular 

 nerve sends branches to the mandible, hyoid 

 bone, and ear. 



8. The eighth, or auditory nerve, arises close 

 to the seventh and passes to the internal ear. 



9. The ninth, or glossopharyngeal nerve, 

 originates immediately behind the auditory 

 nerve. Of its two main branches, one unites 

 with the facial nerve and the other runs to 

 the tongue and pharynx and the neighboring 

 muscles. 



10. The tenth, the pneumogastric or vagus 

 nerve, arises with the ninth and sends branch- 

 es to the larynx, the lungs, the heart, and the 

 stomach. Look for a ganglion on this nerve. 



Compare the cranial with the spinal nerves, 

 noting any resemblances and differences that 

 you may discover. Do the cranial nerves origi- 

 nate from anterior and posterior roots? To 

 what region of body are these nerves mainly 

 confined ? 

 Make diagrams showing the origin and course of the 

 cranial nerves. 



Let the student compare the nervous system of a 

 frog Avith that of man as illustrated by a manikin or 

 chart. 



