442 



THE RABBIT. PHYLUM CHORUATA 



surface. The pyloric end communicates with the intestine by 

 a small opening, the pylorus, provided with a sphincter. The 

 small intestine is a narrow, much-coiled tube, seven or eight 

 feet in length. Its first section or duodenum runs from the pylorus 

 along the right side of the abdomen nearly to the hinder end of 



gast 

 spLen 



Lie noQAsL 



anterior 

 mesenteric 



duodena 



dorsoLumb 



readL 



posterLO 

 meseaterlc 



posievior 

 meserxterlc 



Fig. 352. — Rabbit, blood supply of the gut, ventral view, somewhat diagrammatic. 

 The stomach and most of the intestine have been displaced to the animal's 

 right ; the ileum and the colon are shown conventionally. Arteries are shown 

 lined, with their names on the right of the diagram, veins in solid black with 

 their names on the left. 



A, Adrenal; AP, appendix; C, colon; D, duodenum; /, ileum; K, kidney; L, liver; P, pancreas; 

 R, rectum ; SP, spleen ; S.R., sacculus rotundas ; ST, stomach ; U, ureter. 



the latter and then turns forward, forming a loop. In the mesen- 

 tery between the two limbs of the loop lies the thin, diffuse 

 pancreas, whose duct enters the returning limb of the loop 

 about three inches behind the bend ; close to this point the rectum 

 is attached to the duodenum by mesentery. The liver is a large, 

 dark-red, lobed organ slung from the diaphragm by the falciform 

 ligament ; in a groove upon its right central lobe lies the elongated, 

 dark-green gall bladder, from which the bile duct runs backwards 



