Chapter 3 Digestion

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Section 3-4 Final Digestion and Absorption

small intestine

part of the digestive system where most chemical digestion takes place.

liver

organ of digestion,makes bile for the digestive system

bile

substance that breaks up fat particles

gallbladder

an organ that stores bile

pancreas

an organ of digestion,triangular organ located between the stomach and the first part of the small intestine. produces digestive enzymes that help break down carbohydrates, proteins, fats.

villi

tiny finger shaped structures in the inner surface of the small intestine. increase surface area of small intestine, more surface area more nutrients can be absorbed.

large intestine

last section of the digestive system where water and undigested food that is left from small intestine go

rectum

short tube where the large intestine ends. where waste material is compressed into solid form

anus

muscular opening at the end of the rectum where waste material is eliminated from the body

Function of small intestine

helps absorption of small nutrient molecules.
where chemical digestion and the absorption of nutrients take place

Function of liver

makes bile for the digestive system and bile breaks up fat particles

Function of pancreas

produces digestive enzymes that help break down carbohydrates, proteins, fats.

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