Jumat, 06 September 2013

Colon

Colon or we call large intestine that the last a part of disgetive sytem in our body. Location of colon is intra peritonial or  abdominal cavity or behind od retro peritonium.  A part of colon are : colon ascending, tranverse colon , descending colon , sigmoid and rectum . Colon Ascending and descending colon and rectum are rectoperitonial and colon transverse,sigmoid colon while the caekum and apendic is intraperitoneal. Colon have haustra . And blood supply  colon are comes from branch of the Superior Mesentrica Artery (SMA) and Inferior  Mesentric  antery (IMA). And Inferior Mesentric Vein and Superior Mesentric Vein.

Ascending colon

The ascending colon is one part of four sections of the large intestine. This first section of the large intestine is connected to the small intestine by a section of bowel called the cecum. The ascending colon runs through the abdominal cavity, upwards toward the transverse colon for approximately eight inches (20 cm).
One of the main functions of the colon is to remove the water and other key nutrients from waste material and recycle it back into the body. As the waste material exits the small intestine it will move into the cecum and then the ascending colon where this process of extracting starts. The waste material is moved upwards toward the transverse section of the colon by a process known as peristalsis.

Transverse colon

The tranverse colon is the part of colon from hepatic flexure to the  splenic flexure .The tranverse colon conected to Ascending colon . 

Descending colon

The descending colon is the part of the colon from the splenic flexure to the beginning of the sigmoid colon. The function of the descending colon in the digestive system is to store faeces that will be emptied into the rectum. 

Sigmoid colon

 The sigmoid colon  is the part of the large intestine after descending colon and before the rectum.The walls of the sigmoid colon are muscular, and contract to increase the pressure inside the colon, causing the stool to move into the rectum.

Function of Large intestine

 The large intestine is mainly responsible for storing waste, reclaiming water, maintaining the water balance, absorbing some vitamins, such as vitamin K, and providing a location for flora-aided fermentation.



http://upload.wikimedia.org/wikipedia/commons/9/9b/Illu_intestine.jpg

Reference from goegle












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