220 LABORATORY MANUAL OF HUMAN ANATOMY 



Arteries. 



(a) Common carotid artery (A. carotis communis). 



(aa) External carotid artery (A. carotis externa). 



(aaa) Superior thyreoid (A. thyreoidea superior). 



(1) Hyoid ramus (ramus hyoideus). 



(2) Sternomastoid ramus (ramus sternomas- 



toideus). 



(3) Superior laryngeal artery (4- laryngea 



superior). 



(aab) Lingual artery (A. lingualis). 



(1) Hyoid ramus (ramus hyoideus). 



(aac) External maxillary artery (A. maxillaris externa) 



(0. T. facial).. 



(aad) Sternocleidomastoid artery (A. sternocleidomas- 



toidea). 



(aae) Occipital artery (A. occipitalis). 



(aaf) Ascending pharyngeal artery (A. pharyngea as- 



(ab) Internal carotid artery (A. carotis interna). 

 Veins. 



(a) Internal jugular vein (V. jugularis interna). 



(aa) Lingual vein (V. lingualis). 



(ab) Superior thyreoid veins (Vv. thyreoideae superior -es) . 



(aba) Sternocleidomastoid vein (V. sternocleidomas- 



toidea). 



(abb) Superior laryngeal vein (V. laryngea superior). 



(ac) Common facial vein (V. facialis communis). 



(aca) Anterior facial vein (V. facialis anterior). 



(acb) Posterior facial vein (V. facialis posterior). 

 Nerves. Many of these will be much better seen later; at present they 



should simply be located in the triangle. 



(a) Hypoglossal nerve (N. hypoglossus). 



(aa) Descending ramus (ramus descendens). 



(ab) Loop of the hypoglossus (ansa hypoglossi). 



(ac) Thyreohyoid ramus (ramus thyreohyoideus) . 



(b) Accessory nerve (N. accessorius) (0. T. spinal accessory). 



(ba) Internal ramus (ramus internus). 



(bb) External ramus (ramus externus). 



(c) Vagus nerve (N. vagus) (0. T. pneumogastric nerve). 



(ca) Superior laryngeal nerve (N. laryngeus superior). 



(caa) External ramus (ramus externus) (0. T. external 



laryngeal nerve), 

 (cafe) Internal ramus (ramus internus) (0. T. internal 



laryngeal nerve). 



(d) Glossopharyngeal nerve (N. glossopharyngeus) . 



(e) Sympathetic trunk (truncus sympathicus [pars cervicalis]). 



(ea) Superior cervical ganglion (ganglion cervicale superius). 



(eb) External carotid nerves (Nn. carotid externi). 



(ec) External carotid plexus (plexus caroticus externus). 



(ed) Superior thyreoid plexus (plexus thyreoideus superior). 



(ee) Lingual plexus (plexus lingualis). 



(ef) External maxillary plexus (plexus maxillaris externus). 



