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A substance produced by the liver that breaks up fat particles


A substance produced by the liver that breaks up fat particles


a j shaped pouch where most mechanical and some chemical digestion take place


the largest organ in the body and produces bile


protein that speeds up chemical reaction in the body


the fluid released when your mouth waters


the process by which your body breaks down food into smaller nutrients


a muscular tube that connects the mouth to the stomach

small intestine

A tube connected to the stomach where most chemical digestion and absorption take place


involuntary muscle contractions that push food through the digestive tract.


produces enzymes that break down starches, protein and fat


the muscular opening at the end of the rectum


bone like structures in your mouth


first part of the small intestine where most chemical digestion takes place


a fleshy organ in the mouth that aids in chewing and swalling


a short tube at the end of the large intestine where the waste compresses into solid form


finger like projections that absorbs the nutrient molecules and increases the surface in the small intestine

gall bladder

the organ that stores bile

large intestine

the last section of the digestive system where water is absorbed from the waste.


a flap of tissue that seals off your windpipe, preventing food from entering.


nutrient particles pass through the walls of your digestion system into your body


the passage from the nose and mouth

3 Functions of the digestive system

1. Breaks down food into molecules the body can use.
2. The molecules are absorbed into the blood and carried throughout the body
3. Wastes are eliminated from the body.

Mechanical Digestion

Begins in the mouth but most occurs in the stomach. Three strong layers of smooth muscle contract to produce a churning motion. This action mixes the food with fluids.

Chemical Digestion

Begins in mouth as enzymes in saliva turn starch into sugar, moves through stomach, most occurs in the small intestines where the liquid mixes with enzymes and secretions.

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