The muscle wall between the chest and the abdomen. It is the major muscle used for breathing.

The part of the colon where stool is stored. It is usually located on the left side of the abdomen.

A skin disorder associated with celiac disease and characterized by severe itching and blisters.

A nutrition expert who helps people plan what and how much food to eat.

Nerve or muscle damage in the stomach that causes slow emptying, vomiting, nausea, or bloating. Also called delayed gastric emptying.

Loss of fluids from the body, sometimes caused by diarrhea. It may result in the loss of important salts and minerals.

The tube that carries bile from the gallbladder into the common bile duct.

A parasite that can cause gastrointestinal infection and diarrhea.

A form of inflammatory bowel disease that causes irritation in the gastrointestinal (GI) tract. It usually affects the lower small intestine (also called the ileum) or the colon, but it can also affect any part… 

A small cavity between villi extending into the epithelial surface of the small intestine.