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HBSL2

Lesson 2 Moving through the digestive tract

TermDefinition
Peristalsis Process by which food passes through the digestive system.
Mechanical Digestion Tearing and chewing of food.
Chemical Digestion Breaks down the chemical bonds in nutrients.
Mucus Digestive tract is lined with this slippery substance.
Digestive Tract 8-10 meters long
Sphincter Muscle that controls passage of food from one area to another.
Duodenum First 25cm of small intestine; most digestion occurs here.
Large Intestine Undigested waste is all that remains--absorbs water and electrolytes.
Feces Semi-solid waste that is made up of 1/3 dead bacteria.
Flatus Living bacteria feed on undigested waste and often produce this gas.
Rectum Feces remains here until it is eliminated from the body.
Created by: lfreeze
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