ANIZTAL BIOLOGY. 



[Part I. 



ex.ju. 

 s.cl. 



passing downwards to the mouth. Note at the same time two 

 other glands in the eye-socket, (1) the Harderian, anterior and 

 superior; and (2) the lachrymal, posterior and superior. They 

 are not salivary. 



From the mouth the oesophagus passes through the thoracic 

 cavity, pierces the diaphragm, and at once enters the large 



curved thick -walled stomach. 

 (The elongated deep red body 

 near its broader end is the 

 spleen. ) Then follows the long- 

 coiled small intestine, of which 

 the first part (duodenum, du.) 

 forms a great U-shaped loop, 

 the two limbs of the U being 

 closely connected by a mesen- 

 teric fold, and the ascending 

 limb, that further from the 

 stomach, being closely con- 

 nected by a membranous fold, 

 with the terminal portion (rec- 

 tum, rm.) of the large intes- 

 tine. Within the loop of the 

 duodenum is a ramifying mass 

 of yellowish-red lobules. This 

 is the pancreas. Its duct opens 

 into the duodenum near the 

 end of the loop. Into 



Ctt. 



rmr 



- Ts. 



FIG. 16. VISCERA OF RABBIT. 



ao. Aorta, ao. ar. Aortic arch. Cce. Csecum. 

 Co. Colon, di. Diaphragm, du. Duodenum. 

 ex.ju. External jugular vein. il. Ileum. I. au. 

 Left auricle. I. I. Left lung. I v. Left ven- the duodenum, shortly below 

 tricle. p. a. Pulmonary artery, p. v. Pul- ,-, T 



monaiy vein. pt. c. Post caval vein, r. au. the stomach, Opens the COlll- 

 Right auricle, r. c. Right common carotid <mon bile duct, formed by the 

 artery, r. I. Right lung. r. m. c. Right pre- / i r r 



caval vein. r. ..Right ventricle, rm. iectum. Union of Several factors from 

 s. cl Subclavian vein. Ts. Testes. U.S. Urinary the Various lobes of the large 



liver and one from the gall 



bladder. The rest of the small intestines (ileum, il.) that part 

 not included in the duodenal loop is suspended by a separate 

 fold of mesentery. At its distal end there are several raised 

 whitish oval patches (Peyer's patches). 



