506 



MANUAL OF ZOOLOGY 



with the buccal division round the posterior free edge of 

 the soft palate. From the buccal division leads ventrally 

 the slit-like opening of the glottis into the larynx and 

 trachea ; overhanging the glottis is a leaf-like movable 

 flap (Fig. 304, ep) formed of a plate of yellow elastic 

 cartilage covered with mucous membrane : this is the 

 epiglottis. Behind, the pharynx becomes continuous with 



Fig. 304. — Lepus Cuniculus. Lateral dissection of the head, neck, and thorax. The 

 head and spinal column are represented in mesial vertical section: the left lung 

 is removed; the creator part of the nasal septum is removed so as to show the 

 right nasal cavity with its turbinals. aort, dorsal aorta; b. hy. basi-hyal; cbl, 

 cerebellum; err, cerebral hemispheies; cor. r\ coronary vein ; dia, diaphragm; 

 ep, epiglottis: en, opening of Eustachian tube int<i pharynx; lar, larynx; l.J.v, 

 left jugular vein; / sb. a, left subclavian artery; /. sb. v, left subclavian vein; 

 Died, medulla ; mes. eth, mesethmoid; mx. trb, mnxilla-turbinal ; oss, oesophagus; 

 olf, olfactory lobe; //. a, pulmonary artery; /. max, pie-maxilla; pr. st, pre- 

 sternum; pt. c, post-caval vein; rt. Ing, root of left lung with bronchus and pul- 

 monary veins and artery cut across; s. gl, sub-lingual salivary gland; s. mx. gld, 

 sub-maxillavy salivary gland; st, sternebra;; ing, tongue; ir, trachea; trb, 

 ethmo-turbinals; vel. pi, soft palate. 



the (esophagus or gullet (a>s). The latter is a narrow but 

 dilatable muscular tube, which runs backwards from the 

 pharynx through the neck and thorax to enter the cavity of 

 the abdomen through an aperture in the diaphragm, and 

 opens into the stomach. 



