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12 Cards in this Set
- Front
- Back
essential nutrients
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required by cells and must be obtained from dietary sources, four types:
essential amino acids essential fatty acids vitamins minerals |
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undernourishment
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the result of a diet that consistently supplies less chemical energy than the body requires
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malnourishment
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the long term absence from the diet of one or more essential nutrients
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ingestion
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the act of eating
four types: suspension feeders substrate feeders fluid feeders bulk feeders |
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digestion
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the process of breaking food down into molecules small enough to absorb
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absorption
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uptake of nutrients by body cells
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elimination
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the passage of undigested material out of the digestive compartment
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peristalsis
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food is pushed along by this, rhythmic contractions of muscles in the wall of the canal
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sphincters
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valves that regulate the movement of material between compartments
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small intestine
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the longest section of the alimentary canal and the major organ of digestion and absorbtion
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duodenum
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the first portion of the small intestine is this where acid chyme from the stomach mixes with digestive juices from the pancreas, liver, gallbladder, and the small intestine itself
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pancreas
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this produces trypsin and chymotrypsin protein-digesting enzyme that are activated after entering the duodenum
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