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| the breaking down of food into chemical substances that can be used for energy |
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| the organs that break down food so that it can be used by the body |
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| a ringlike muscle which closes a natural orifice or passage |
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Definition
| a long, straight tube that connects the pharynx to the stomach |
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Definition
| the series of rhythmic muscular contractions that move food through the digestive tract |
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| the saclike, expandable digestive organ that is located between the esophagus and the small intestine and that breaks down food into a liquid by the action of muscles, enzymes, and acids |
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Definition
| the mixture formed in the stomach from digested food particles and gastric fluid |
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| the region of the digestive tube between the stomach and the colon (large intestine) where food's acidity is neutralized and most of the nutrients are absorbed |
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| a fluid that is secreted by the liver and that emulsifies fats in digestion |
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| in digestion, the process by which the end products of digestion are absorbed by the organism's fluids and cells |
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Definition
| one of the many tiny projections from the cells in the lining of the small intestine; increases the surface area of the lining for absorption |
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Definition
| a fingerlike projection from the surface of certain animal cells, such as the epithelial cells that line the intestine, that increases the cell's surface area for absorption |
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