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How is the stomach lining protected from the strongly acidic pH of its contents?
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39. Digestive System
Digestion
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In humans, most nutrient molecules are absorbed by the __________.
A
stomach
B
liver
C
large intestine
D
pancreas
E
small intestine
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Understand the role of each organ listed in the options: the stomach, liver, large intestine, pancreas, and small intestine.
The stomach primarily functions in the digestion of food, breaking it down into a semi-liquid form called chyme.
The liver is involved in processing nutrients absorbed from the small intestine and detoxifying chemicals.
The large intestine absorbs water and salts from the material that has not been digested as food, and is responsible for forming waste.
The small intestine is the primary site for nutrient absorption. It has a large surface area due to villi and microvilli, which facilitate the absorption of nutrients into the bloodstream.
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