DISSECTION OF THE HEAD AND NECK 267 



To find this dissect in the interval between the N. lin- 

 gualis and the deep part of the glandiila submaxillaris. 

 Find 



(ca) Branches communicating with the lingual nerve (rami com- 



municantes cum N. linguali). 



(cb) Submaxillary rami (rami submaxillares) . 

 (d) Glossopharyngeal nerve (N. glossopharyngeus) . 



How does it behave as regards the M. hyoglossus ? 

 Arteries. 



(a) Lingual artery (A. lingualis}. (Fig. 113.) 

 Veins. 



(a) Lingual vein (V. lingualis}. 



(aa) Sublingual vein (V. sublingualis}. 



(ab) Companion veins to hypoglossal nerve (Vv. comites N. 



hypoglossi). 



Salivary Glands. 



(a) Deep part of submaxillary gland (glandula submaxillaris). 



(aa) Submaxillary duct (ductus submaxillaris [Whartoni]). 



(b) Sublingual gland (glandula sublingualis). 



(ba) Larger sublingual duct (ductus sublingualis major) (0. T. 



duct of Bartholin). 



(bb) Smaller sublingual ducts (ductus sublinguales minores) (0. 



T. ducts of Rivini). 



Hyoglossal Muscle (M. hyoglossus). 



Study its form, position, origin, insertion, action, and inner- 

 vation. Then detach it from the hyoid bone and reflect it 

 upward. Study the structures beneath. 



Arteries. 



(a) Lingual (A. lingualis) in its second and third parts. 



(aa) Dorsal rami of tongue (rami dorsales linguae}. 



(ab) Sublingual artery (A. sublingualis). 



(ac) Deep artery of tongue (A. profunda linguae) (0. T. ranine 



artery). 

 Veins. 



(a) Tributaries of lingual vein. 



(aa) Companion veins of lingual artery (Vv. comites A. lin- 

 gualis). 



DEEP DISSECTION OF NECK. 

 Stylopharyngeus Muscle (M. stylopharyngeus). (Vide Spalteholz, 



Fig. 53I-) 



Remove the calvarium; sponge the floor of the skull-cavity 

 with alcohol. Cut through the venter posterior M. digastrici 

 near its origin from the incisura mastoidea of the temporal bone, 

 and turn it forward and downward. At this point observe the 



