128 



EARLY EMBRYOLOGY OF THE CHICK 



ganglion Vll-vm 

 auditory vesicle 



myelocoele 



anterior cardinal vein 



ganglion V 



branch of int. carotid a. 



branch o( ant. cardinal 

 metacoele 



neuromere 



aortic arch II 

 aortic arch III 



int. carotid a. 



ant. cardinal 



notochord 



dorsal aorta 

 4nt. cardinal v 



pharyngeil pouch I 



visceral cleft ill 

 rS visceral arch III 



visceral cleft II 



mandibular arch 

 hyomandibular cleft 

 hyoid arch 



pericardial region of coelom 

 trachea 

 oesophagus 



central body wall 



optic Italic 

 sensory layer of retina 

 pigment layer of retina 



allantoic vein 

 pleural region of coelom 

 lung bud 

 post, cardinal v 



olfactory pit 



omphalomesenteric vem 



liver 

 endocardial cushion tissue 



D 



[Fig. 46.! 



