digestive system [information over pictures] [3a]

The food we eat is chewed and swallowed It is diverted towards the stomach by the pharynx at the back of the throat.	A series of muscles squeeze together and push the food down a tube called the esophagus.	When the food gets to the stomach a valve closes to stop the food from escaping.
Anything useful from the food is absorbed through the stomach wall.	The small intestine shown here, is the length of a tennis court.	Here you can see the whole process from the mouth to the anus.

Look at all of the pictures in turn. As you hover over each one a blue screen appears with an explanation of what the picture shows. Important words are highlighted. If you are certain that you know about the picture click on it and it will disappear. As you go through all of the pictures you will get rid of all those which you know about and be only left with those you may be unsure of. In some cases you may get rid of all of the pictures in which case you are ready to move on to other activities which will test your knowledge on this topic.