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Digestive system

Digestion

TermDefinition
Nutrition The process by which organisms obtains and used food
Autotrophs Organisms that can make their own food
Heterotrophs Organisms that cannot make their own food and must obtain food from their environment
Herbivores Animals that feed only on plants
Carnivores Animals that feed only on animals
Omnivores Animals that feed on plants and animals
Digestion The physical and chemical breakdown of food into smaller soluble particles that can be absorbed by the body
Ingestion Food is taken into the alimentary canal
Digestion Food is broken down into smaller soluble pieces
Absorption The movement of digested food from the digestive system into the blood
Egestion Removal of undigested and unabsorbed material as feaces
Food Pyramid The guide to healthy eating indication the proportions of different types of food to be eaten in a day
Peristalsis The wave like contraction of circular and longitudinal muscles that causes food to move along the alimentary canal
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