162 



HITCHCOCK'S ANATOMY 



grayish blue color, and not exceeding three inches in length. 

 The entrance of the Ilium into the Caecum is effected by a 

 valvular arrangement which allows the food to pass into the 

 Caecum, but never in the opposite direction. It is situated at 

 the right Innominatum in the lower part of the abdomen, and 

 its lowest portion has a worm-shaped process attached to it, 

 which is only rudimentary, and consequently of no great 

 service to man, but largely developed and of great service in 

 some of the bwer animals, and especially in the herbivorous 

 ones. 



299. Colon. — The Colon (from the Greek signifying "to 

 prohibit/" 7 since the food passes very slowly through this part 

 of the canal), commences at the Caecum on the right side of 

 the abdomen, and in the first part of its course passes in an 

 upward direction, and is called the ascending Colon. When 

 it reaches the lower edge of the liver, it crosses horizontally 

 to the extreme left edge of the body, constituting the trans- 

 verse Colon. After this it descends, and joins the Rectum, 

 forming the descending Colon. Its length is from five to 

 eight feet. 



300. Rectum. — The Rectum completes the divisions of the 

 Intestines. It is nearly straight in its course, of a larger 

 size than any other division of the canal, except the stomach, 

 and from six to eight inches in length. Its name i3 derived 

 from the straight direction which it assumes. 



301. Division of the Intestines into small and large, — 

 The last three divisions have a much larger diameter than 

 the first three, and are called on that account the large Intes- 

 tine, and the Duodenum, Jejunum and Ilium, the small In- 

 testine. The latter seems to be the portion necessary for 

 preparing the food to enter the Lacteals, while the large In- 

 testines act mainly as a receptacle for the waste portion. 



Where is its location in the body? What curious appendage is attached to it? 299. 

 What are the three divisions of the Colon? How long is it? 300. What does the Colon 

 terminate in? How long is the Kectum? 301. Define the large and the small Intestine, 

 and give their probable uses. 



