Science Grade 7

Term Definition
villi structures that increase the surface area of the small intestine
small intestine almost all chemical digestion and absorption take place here
The last section of the digestion system large intestine
peristalsis wave-like muscle contractions
liver produces bile
gall bladder stores bile
bile breaks up fat molecules
pancreas produces enzymes that chemically break down food
large intestine Extra water is absorbed here
chemical digestions breakdown of food by enzymes
mechanical digestion chewing
small intestine villi lines these walls
mouth digestion begins here
epiglottis flap that covers your windpipe to prevent choking

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