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20 Cards in this Set
- Front
- Back
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Digestive System, Made of:
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Ectoderm, mesoderm (viseral organs, endoderm (lining of G.i Tract)
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Mechanic Action
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breakdown- proivided by movement of jaws and teehth
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Mastication
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to reduce size of food but increase surface area
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Absorption of nutrients
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small intestine
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Salivary Amylase
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chemical breakdown in the mouth, provided by enzymes
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nutrients & water
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pass through the G.i tract for absorption in small and large intestine.
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Digestion:
fxn: |
to repruce complex organic molecules to simpler units for easier absorption.
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Carbs ----->
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monosachrides to provide energy: blood.
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protein --->
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amino acids
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Lipids -->
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glycerol and fatty acids
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Cabohydrates
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broken down into simple sugars for easy transportation though the blood stream or stored as fat for long-term storage; energy source
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Proteins:
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broken down into amino acids and then reassembled into other proteins for use in the body. Can be use an energy source.
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Lipids
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broken down and used to make hormones maintain cell membrane, or stores for later use; excellent energy source (2x than carbs)
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Minerals/vitamins
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used as a source of ions for mny biochemical reactions in the body: nerve impulses, digestion, muscles contraction, cellular integrity, etc..
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water
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required by all living things for homeostasis in cells.
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Enzymes,
protein |
catalyst that speeds up rates of reactions by reducing activation energy.
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Enzymes
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bint to the active site of the substance. Degraded and re synthesized when needed.
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metabolism
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the sum total of all chemical processes in the body, transfer of energy to matter
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cataoblism
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breaking of chemical compounds to provide energy
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anabolism
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provide building blocks for new compounds
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