The Digestive system

Your body needs energy to run, jump, skate, and ride a bike. It also needs nutrients to build strong bones and muscles and to help you grow. God designed your digestive system to give you the nutrients and energy you need.

The digestive system begins in your mouth, where your tongue and teeth work togehter to break food into small pieces that can easily be swallowed. Saliva glands squirt saliva into your mouth. Saliva contains various enzymes, chemicals that hlp with digestion, to help begin the process of breaking down your food. The food then travels down the esophagus-a tube starting at the back of your throat that leads into your stomach. In the stomach, water and hydrochloic acid break down the food particals and the stomach cchurns the food untill it is a thin liquid consistency. Food spends from 30 mintues to 3 hours in your stomach, depending on what you eat. When the food is broken down enough, it leaves the stomach and enters the small intestine. The small intestine is a tube about 19 feet long that coils back and fourth inside your body. It is lined with finger-like projections called villi. The food molecules pass through the villi membrane and into the blood stream where they are taken throughout the body and   converted into energy.

Then the nutrients are used to buil up your body. The parts of the food that cannot be used are passed on into the large intestine. This is a rube that is wider but shorter than the small intestine. In the large intestine water is removed and the unusable parts of the food pass out of the body.

What did we learn?

What are the main parts of the diggestive system? [hint >  The things that were talked about? Just guess.]

What role do your teeth play?

What does your tongue play?

which is longer?, your small intestine or your large intestine?

Which is wider? Your small intestine or your large intesine?

Answers on The Digestive system answers