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Peritoneum

The tissue that lines the abdominal wall and covers most of the organs in the abdomen.

PubMed Health Glossary
(Source: NIH - National Cancer Institute)

Overview of the digestive system. Click to enlarge

Abdomen and digestive system NIH Medical Arts

Terms to know

Esophagus
The muscular tube through which food passes from the throat to the stomach.
Gallbladder
The organ that stores the bile made in the liver and that is connected to the liver by bile ducts. The gallbladder can store about 2 tablespoons of bile. Eating signals the gallbladder to empty the bile through the bile ducts to help the body digest fats.
Large Intestine
The part of the intestine that includes the appendix, cecum, colon, and rectum. The large intestine absorbs water from stool and changes it from a liquid to a solid form. The large intestine is 5 feet long.
Liver
The largest abdominal organ. The liver carries out many important functions, such as making important blood proteins and bile, changing food into energy, and cleaning alcohol and poisons from the blood.
Oral Cavity (Mouth)
Refers to the mouth. It includes the lips, the lining inside the cheeks and lips, the front two thirds of the tongue, the upper and lower gums, the floor of the mouth under the tongue, the bony roof of the mouth, and the small area behind the wisdom teeth.
Pancreas
An organ that makes insulin and enzymes for digestion. The pancreas is located behind the lower part of the stomach and is about the size of a hand.
Pouch of Douglas
A sac or recess formed by a fold of the peritoneum.
Small Intestine
The organ where most digestion occurs. It measures about 20 feet and includes the duodenum, jejunum, and ileum.
Stomach
An organ that is part of the digestive system. The stomach helps digest food by mixing it with digestive juices and churning it into a thin liquid.

Terms to know

Esophagus
The muscular tube through which food passes from the throat to the stomach....
Gallbladder
The organ that stores the bile made in the liver and that is connected to the liver by bile ducts. The gallbl...
Large Intestine
The part of the intestine that includes the appendix, cecum, colon, and rectum. The large intestine absorbs w...
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