464 



THE RABBIT. PHYLUM CHORDATA 



a chain of ganglia, with connectors, running down in the body 

 below the vertebrc-e. At the anterior end it communicates with 

 the third, seventh, ninth, and tenth cranial nerves. It gives nerves 



Hyoid. 



S ubm axillary gland, _ _ 

 Anterior facialvein. - 

 Posterior facial ^ein - 



AnCeriorfacialvein. - - "'^V/y/ 



m. 



_ _ ^ --'K &lo5Sopharj/ngeaL 



iL UL Hypoglossal- 



Anterior cervical 



ganglion. 



Vagus ganglion. 



-XL SpLnal accessory. 



..y^Spinal 



( great auncular.) 



" ~-Z Anterior iaryngeai- 

 "~ -tX Depressor, 

 'j;^ -Cervical Sympathetic. 

 "S^ Va$us. 

 "~" ~" -Phrenic. 

 "^-S^Spcnal. 

 - X Recurrent iaryngeai. 



Middie ceryical 



ganglion, 



Internal carotid artery 



External carotid arttry. _ - 



Thyroid gland-— - ' ' 

 External jijgular van 



Trachea. 



Common carotid artery 



Internal jugular vein 



Jugular anaston^oSiS--^ -" 



Subclavian artery ^ 

 Subclavian vein.^" 

 Section through l^^nb. 

 Anterior vena cava -- 



Systtmic arch. — - -^ 



Ductus arteriasus. 

 Root of puLmonaryi 

 artery-- - - " 



Left ventre cle- - 



Fig. 364. — A slightly diagrammatic drawing of a dissection of the neck of a 

 rabbit. The heart is deflected to the animal's right, and the arteries, veins and 

 nerves are stretched laterally so as to increase the distance between them. 

 All names on the right of the diagram are of nerves. Notice the asymmetry of 

 the recurrent laryngeals and the origin of the arteries (cf. Fig. 355 and p. 449)- 



especially to the viscera, but also to the skin and many other 

 parts of the body, perhaps all. Some of these nerves associate 

 in large ganglia. The most conspicuous of these is the group 

 called coeliac around the base of the anterior mesenteric artery, 

 the group and its connections making the solar plexus (Fig. 363). 

 The autonomic system is discussed more fully on pp. 613-615. 



SENSE ORGANS : GENERAL FEATURES 



The senses of a backboned animal, such as a rabbit, are more 

 numerous than is generally realised. Besides the ' five senses ' 



