190 AVES (the bird) 



(6) The Pancreas, a yellowish, slender, glandular organ, lies 



within the loop of the duodenum. Find the pan- 

 creatic ducts leading to the right limb of the loop of 

 the duodenum. 



(7) The Spleen, a small, flat, red body, lies to the right of the 



glandular stomach. Do you find any duct leading 

 from the spleen? 



(8) The Intestine continues from the duodenum, its ante- 



rior part, to the cloaca, the enlargement at its poste- 

 rior end. 



(a) Is it coiled, looped, or straight? 



(b) Is it the same size all the way? 



(9) The Rectal Ceca are two lateral sacs or branches of the 



intestine at the end of the small intestine. 

 How long are they and how do they end? Use? 

 (XO) The Rectum, or large, straight intestine, leads from 

 the entrance of the ceca to the cloaca. 

 How long is the rectum? 



(11) The Liver. (See B, 4.) 



(12) Sketch the Alimentary Canal, name all its parts in 



order, and state the use of each part in the work of 

 digestion. 

 7. The Respiratory System. 



(1) The Glottis. Look at the base of the tongue for the 



opening into the trachea. 



(a) Does the food pass over it in entering the esophagus? 



(b) If so, how is it prevented from passing into the wind- 



pipe? 



(2) The Trachea. Trace the trachea down to its divisions. 



(a) Is it the same size all the way? 



(b) The enlargement at its anterior end is the larynx 



and the one at its posterior end is the syrinx, or 

 voice-box. 



(3) The Bronchi are the branches, or divisions, of the 



trachea. 

 Do they differ in size? 



(4) Remove the alimentary canal and sketch the respira- 



tory organs. 



