THE GRAY RABBIT, OR COTTON TAIL 91 



amount it will hold. What leaves the stomach at the end 

 opposite the gullet? The first part of the intestine, be- 

 ginning at the stomach, is the duodenum. This is folded 

 upon itself forming a long narrow loop. The opening of 

 the stomach into the duodenum is guarded by a valve, the 

 pylorus, which prevents food from leaving the stomach until 

 it has been properly acted upon. The ducts from the gall 

 bladder and pancreas enter the duodenum. Find the gall 

 bladder beneath one of the lobes of the liver. The pancreas 

 is a whitish mass in the loop of the duodenum. Lying be- 

 hind the stomach is a large, flat, dark red gland, the spleen. 



Following the duodenum is the small intestine which is 

 much folded. To complete the alimentary canal is the 

 large intestine. Where the large and small intestines join 

 is a large pouch that takes up considerable room in the 

 abdominal cavity. In fact, it is the most conspicuous part 

 of the alimentary canal. This is the ccecum. It ends in a 

 fingerlike process known as the vermiform appendix, which, 

 in man, is often the seat of the disease known as appendicitis. 



Note the bean-shaped kidneys attached to the dorsal side 

 of the abdominal cavity. Note a long, white duct, the 

 ureter, passing downward from each kidney to the bladder, 

 which lies ventral to the large intestine. 



Begin again at the glottis. Just below is the larynx, the 

 voice chamber. From this leads the windpipe, or trachea. 

 Note the cartilaginous rings about the trachea. Note that 

 the trachea soon divides into two tubes, the bronchi. Note 

 that one passes to the root of each lung. Cut the larynx 

 open and find the vocal cords. 



The heart and circulation are very similar to those of the 

 sparrow, and the directions given there will suffice for the 

 rabbit. 



