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MAR 362

TermDefinition
Central trade-off Maximize nutrient extraction VS Minimize time + energy processing food
Matter Pathway What moves physically: Food particles (proteins, lipids, carbohydrates, minerals, water) - Mouth -> esophagus -> stomach -> intestine ->waste elimination - Fish: Mouth -> esophagus -> stomach -> pyloric caeca -> bile duct -> intestine -> anus
Matter Pathway Functional Regions - Mechanical breakdown (mastication/gastric churning) - Chemical digestion (enzymes, acids, bile) - Absorption (small intestine) - Water + Electrolyte recovery (Hindgut)
Energy Pathway What is extracted and Transformed Energy is: - stored chemically in food - released during digestion + metabolism - transferred into biological work Food -> Digestion -> Absorption -> Cellular Metabolism -> ATP -> Work/Heat
Energy Extraction Sites Small Intestine (Critical Site) - primary site of nutrient absorption - energy enters the body here in unusable form Cells (Post Absorption - cellular respiration & ATP production - growth, locomotion, thermoregulation
Herbivore Long, complex guts with fermentation chambers - low quality diets - Long intestines, microbial fermentation
Carnivore
Role of the Liver
Role of the Pancreas
Specific Dynamic Action (SDA) and Factors
What activities increase metabolic rate for marine vertebrates?
Created by: user-2040362
 

 



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