Our Body- Digestive System

We all like to eat, but why do  people need to eat and what happens to the food when we swallow it? Pre-K friends said that they eat because they want to become strong.  Morah said, that like a car needs gas to run, people need energy to live. Food gives us energy. There is a little factory in our body that called the Digestive System. It turns the food into the energy. Digestion starts with our mouths.

When we chew food it mixes with saliva that is used to soften food so it can pass smoothly right down Esophagus tube.  In class, friends did a little experiment with saliva. Friends took a very dry bread stick and chewed it. When they spit it out it looked moist. Friends said that saliva makes it easier to swallow.  Everyone paid attention to the sensation of how food feels when it is going down.  sour juice that helps to break food down into smaller pieces. Anything that our body can't use goes to the Intestines. It called body waste. When waste is collected in the  intestines we feel some pressure at the bottom of our pelvis. This is when we know it's time to go to the bathroom.
The Esophagus passes the food straight to the Stomach. In the stomach there is very

 http://www.youtube.com/watch?v=2ea7LtEZOYk