liprary assighment

Name : xxxxxxxxxxx

Institution : xxxxxxxxxxx

Course : xxxxxxxxxxx

Title Human Large Intestines- Inflammatory Bowel Disease

Tutor : xxxxxxxxxxx 2010

Human large intestines

The large intestine is composed of the colon , cecum , appendix , rectum and the anal canal . The main functions of the colon are the reabsorption of electrolytes and water and the removal of undigested food and waste . The cecum is a blind pouch which is positioned at the distal position to the ileocecal valve which has a histology that is similar to that of the colon . The appendix is a

thin extension of the cecum that looks like a finger . The rectum is the enlarged distal portion of the large intestines . It has a histology that is similar to that of the colon although it is well-known by its transverse rectal folds found in its submucosa and the lack of tenia coli in its muscularis externa (Gasche et al , 2000

The mucosa of the large intestines appears smooth due to lack of villi Instead there are very many straight , tubular glands which extend as far as the muscular mucosae . The glands are lined with simpler columnar epithelium . The muscular externa is composed of an inner circular and outer longitudinal layer . The inner circular layer is distinctive , but the outer longitudinal layer of the colon is very slim save for three extremely thick longitudinal bands referred to as teniae coli (Vasiliauskas et al , 2000

Inflammatory Bowel Disease

Inflammatory Bowel Disease is a tern used to describe two chronic diseases that result to inflammation...