GENERAL ANATOMY OF EMBRYO OF 7.8 MM. 



229 



Car. in Md 

 Isth A. has S.P \ H.B Car. ex Ao.III 



Ao.IV 



Nch 



Ao 



A.il 



V.om 



A.o.m V .port 



FIG. 169. PIG EMBRYO OF 7.8 MM. TRANSVERSE SERIES 1358. RECONSTRUCTION BY FREDERICK W. THYNG. 



a, Artery. A .has, Arteria basilaris. A .cand, Caudal artery. A .il, Doifble openings of left common iliac artery 

 into the aorta. All, Allantois. Ao, Main aorta. Ao.D, Descending aorta. Ao.III, Right third aortic 

 arch. A o.I V, Right fourth aortic arch. Ao.V, Right fifth aortic arch. A . o.m, Omphalo-mesaraic artery. 

 A Mm, Umbilical artery. Bro, Bronchus. Car, Carotid loop. Car. ex, External carotid anlage. Car. in, 

 Internal carotid. Cce.ax, Coeliac axis. Clo, Cloaca. Col, Colon, entodermal part. F.B, Fore-brain. 

 For.ia, Interatrial foramen. For .iv, Foramen interventriculare. F. ov, Foramen ovale. H.B, Hind-brain. 

 Hy, Hypophysis. In.caud, Caudal intestine. II, Small intestine, entodermal part. Isth, Isthmus. Ki, 

 Kidney. Li, Liver. M.B, Mid-brain. Md, Mandible. Nch, Notochord. N.cerv, Cervical nerve. CE, (Esopha- 

 gus. Pan.d, Dorsal pancreas. Pan.v, Ventral pancreas. (The line does not quite reach the organ, 

 which lies ventrad from the intestine.) Ph, Pharynx. Som, Somatopleure. S.P, Seessel's pocket. Sp.c, 

 Spinal cord. St, Stomach. Ve.hep, Hepatic vein. V.om, Omphalo-mesaraic vein. V.port, Portal vein. 

 V.pul, Pulmonary vein. V.s.m, Superior mesenteric vein. W.D, Wolffian duct. Yk, Yolk-sac. X 14 

 diams. 



