What are the different body systems?

What is digestion?

Where does digestion take place?

What is the digestive tract?

What are the two types of digestion?

What is mechanical digestion?

What is chemical digestion?

What are the four types of teeth?

What is saliva?

What is the function of the tongue?

What is the oesophagus?

What is peristalsis?

What is the epiglottis?

What are sphincters?

What is the stomach?

What do gastric juices contain?

What is the small intestine?

What is the duodenum?

What are the walls of the duodenum?

What is the pancreas?