102 



TOPOGRAPHICAL ANATOMY OF THE 



but one of its branches (ramus exteruus) supplies the crico-thyroid 

 muscle. 



The recurrent nerve has been followed up the neck along the 

 dorsal border of the trachea (page 6). Its termination furnishes 

 branches to all the intrinsic muscles of the larynx except the crico- 

 thyroid. Fine anastomotic branches (rami anastomotici) connect the 

 cranial laryngeal and recurrent nerves. 



The laryngeal artery has been noted as a stout branch of the 



Thyroid cartilage (in section). 



Lig. cricothyreoideum (in section). 

 \'ocal fold. 



Cricoid cartilage (in section) 



1st tracheal cartilage. 

 M. sternothyreoideus. 



M. sternohyoideus. 



M. omohvoideus. 



Epiglottis (in section). 



Pharyngo-palatine arch. 



Ventricle. 



Arytenoid cartilage. 

 Thyroid lamina (in section). 



M. cricoarytsenoideus lateralis. 



M. jugulomandibularis. 



M. cricopharyngeus. 



-M. cricoarytaenoideus dorsalis. 



Submaxillary gland. 



Parotid gland. 



M. sternocephalicus. 



Fig. 40. — Dissection of the laryngeal region. The left wall of the larynx 

 has been partially removed to'show the interior. 



cranial thyroid (page G). It can now be followed between the 

 cricoid and thyroid cartilages to its termination in the laryngeal 

 mucous membrane. 



Dissection. — Strip the nuicous menilnaiie from tlie interior of the 

 larynx and remove the remain.s of the muscles. Care must be exercised 

 in the removal of the membrane from tlie epiglottis, cuneiform and 

 corniculate cartilages, as these are readily torn. 



The description of the laryngeal cartilages, already given (page 93), 

 should be read again. 



The connections of most of the cartilages of the larynx have 

 been described as the dissection proceeded, but there still remains 

 to be examined the attachment of the epiglottis to the thyroid. 



