How long is food stored in the stomach?

What is gastric juice produced by?

What does gastric juice contain?

What is hydrochloric acid?

What is mucus?

What are digestive juices?

What is the duodenum?

What do the two tubes entering the duodenum carry?

What is a pancreas?

What does the pancreatic juice help digest?

What is bile?

What does the body use as its main source of energy?

What is the anus?

What is vomiting?

What does diarrhoea do?

What is a heartburn?

What is the appendix?

What are the three disorders of the digestive system?

What does the villi do?

What happens in the large intestines?

What is the largest internal organ in the body?