Human Nutrition Flashcards
Nutrition
The way an organism obtains and uses its food
Autotrophic
Capable of producing its own food
Heterotrophic
Not capable of producing its own food, must obtain food form other organisms
Digestion
The process of breaking down food into soluble molecules
Ingestion
The taking of food into the body
Absorption
The passing of small soluble molecules into the bloodstream
Egestion
The removal of unabsorbed materials from the body
Mechanical digestion
Breakdown of food by physical means
Balanced diet
Contains the correct amounts of all food types and water
Food pyramid
Diagram showing the correct number of servings of different foods to have a balanced diet
Peristalsis
Wave of muscular action in walls of the alimentary canal that moves contents along