Anatomy Of The Intestines

The small intestine is made up of the duodenum jejunum and ileum. The intestines include the small intestine large intestine and rectum.

Anatomy And Normal Microbiota Of The Digestive System

These structures greatly increase the area of the secreting and absorbing surface.

Anatomy of the intestines. The small intestine has three segments. The small intestine small bowel is about 20 feet long and about an inch in diameter. Its job is to absorb most of the.

They are connected to the posterior wall of the abdomen by the mesentery a thin vascular membrane. Anatomically the colon can be divided into four parts ascending transverse descending and sigmoid. The ileocecal valve located at the opening between the ileum and the large intestine controls the flow of chyme from the small intestine to the large intestine.

The main function of the small intestine is continued digestion and absorption of nutrients. The duodenum the jejunum and the ileum. Together with the esophagus large intestine and the stomach it forms the gastrointestinal tract.

In humans the large intestine begins in the right iliac region of the pelvis just at or below the waist where it is joined to the end of the small intestine at the cecum via the ileocecal valve. The mucous membrane lining the intestinal wall of the small intestine is thrown into transverse folds called plicae circulares and in higher vertebrates minute fingerlike projections known as villi project into the cavity. It then continues as the colon ascending the abdomen across the width of the abdominal cavity as the transverse colon and then descending to the rectum and its endpoint at the anal canal.

The cecum the colon the rectum and the anus. But is only 15 meters in length which is around one fifth of the length of the intestinal canal. In living humans the small intestine alone measures about 6 to 7 meters long.

These sections form an arch which encircles the small intestine. It frames the small intestine on three sides. After death this length can increase by up to half.

The large intestine is the terminal part of the alimentary canal. Gross anatomy the intestines are located inferior to the stomach in the abdominal body cavity. The primary function of this organ is to finish absorption of nutrients and water synthesize certain vitamins form feces and eliminate feces from the body.

The small intestine starts at the pylorus of the stomach and ends at the cecum of the large intestine. As compared to the small intestine the large bowel is wider. The large intestine consists of the cecum ascending colon transverse colon descending colon and sigmoid colon.

The large intestine runs from the appendix to the anus. The colon large intestine is the distal part of the gastrointestinal tract extending from the cecum to the anal canal. It has a surface area of over 200 meters.

It receives digested food from the small intestine from which it absorbs water and electrolytes to form faeces. The large intestine is subdivided into four main regions.

Intestines Anatomy