science digestion
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| Digestion | The process of breaking food down into nutrients the body can use
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| Where does digestion begin | In the mouth
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| whta are the two types of digestion | mechanical digestion and chemical digestion
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| Describe mechanical digestion | when food is physically broken down into smaller pieces
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| Describe chemical digestion | When enzymes and other chemicals break down large food molecules into smaller ones the body can use
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| how are teeth used in digestion | they mechanically break apart the food
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| how do salivary glands help the process of digestionin our mouth | they secrete mucus that lubricates and holds food together
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| how does chemical digestion happen in the mouth | enzymes found in saliva chemically break down starches into sugars
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| what is the function of your epiglottis | It is a flap of tissue that covers the windpipe when you swallow
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| what is the esophagus | The esophagus is a pipe-shaped tube into which the food is forced after swallowing. It transports the food into your stomach
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| what is peristalsis | Powerful waves of muscle contractions that push food through the digestive system
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| what are three things that happen in the stomach | 1.protein digested
2.kills bacteria
3. liquefies food and is called chyme
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| why are the mucus glands in the stomach important | they secrete thick mucus that protects the stomach lining from the acid
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| What shape is the stomach | the stomach is a j-shaped muscular organ that mashes food into a liquid
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| what is the main digestive organ | small intestine, most of the digestion takes place here. Most absorption of nutrients happen here
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| How is food pushed through the small intestine | peristalsis, wavelike contractions that push food
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| how do cells that line the walls in the small intestine help in the digestion process | they release special enzymes that chemically break down the food
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| how do the liver and pancreas help the process of digestion | they produce enzymes that are secreted into the small intestine to break down food and fat. Bile is made in the liver and secreted through the gall bladder
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| villi cover the wall of the small intestine. What is there function | these finger-like projections absorb the nutrients and pass them to the blood vessels that carry them to other parts of the body
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| what does the large intestine do | this part of the digestive track takes water out of the undigested food, which then forms a solid waste
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| what are enzymes and protiens | protiens that chemically break large food molecules into smaller molecules during digestion
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Created by:
Jlevine
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