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Digestion/Nutrition

Terms relating to Digestion & Nutrition

TermDefinition
Autotrophic [organism] Capable of producing its own food
Heterotrophic [organism] [organism] not capable of producing their own food i.e organism obtains food from other organisms
Omnivore An animal that eats both plants and animals
Carnivore An animal that eats only other animals
Herbivore An animal that eats only plants
Digestion The process of breaking down food into smaller, soluble molecules
Ingestion The taking of food into the body (through the mouth )
Absorption The passing of small soluble molecules into the bloodstream ( from the digestive tract)
Egestion The removal of unabsorbed material from the body
Mechanical digestion Breakdown of food into smaller particles by physical means
Chemical digestion Breakdown of food molecules by chemical means
Peristalsis Rhythmic muscular contraction and relaxation in the wall of the alimentary canal causing the food to move along the canal
Dental formula The number of each type of tooth in the upper and lower jaw on one side of the mouth
Symbiosis A relationship between 2 organisms of different species where both partners benefit