Animal Nutrition
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Nutritional Requirements
Animals are heterotrophs that require food for fuel, carbon skeletons, and essential nutrients: an overviewFood Types and Feeding Mechanisms
Homeostatic mechanisms manage an animal's fuel
An animal's diet must supply essential nutrients and carbon skeletons for biosynthesis
Most animals are opportunistic feeders Diverse feeding adaptations have evolved among animalsOverview of Food Processing
The four main stages of food processing are ingestion, digestion, absorption, and eliminationThe Mammalian Digestive System
Digestion occurs in specialized compartments
The oral cavity, pharynx, and esophagus initiate food processingEvolutionary Adaptations of Vertebrate Digestive Systems
The stomach stores food and performs preliminary digestion
The small intestine is the major organ of digestion and absorption
Hormones help regulate digestion
Reclaiming water is a major function of the large intestine
Structural adaptations of the digestive system are often associated with diet
Symbiotic microorganisms help nourish many vertebrates
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