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Ch28:Human Nutrition

Human Nutrition

What are herbivores Animals that feed mainly on plants eg cattle/sheep
What are carnivores Animals that feed mainly on animals eg dogs/cats
What are omnivores Animals that feed on plants and animals eg humans/badgers
What are autotroph Make their own food by photosynthesis
What are heterotrophs Cannot make their own food so take their food from the environment eganimals and fungi
Name two types of heterotrophs Parasites and saprophytes
What are parasites Take in their food from a live source causing harm eg flees and disease causing bacteria
What are saprophytes Take in their food from dead organic matter eg bacteria and fungi of decay
What is igestion Taking of food into the digestive system (when food is out in the mouth)
What is digestion Breakdown of food can be physical or chemical
What is absorption When digested food passes from the digestive system and enters the blood
What is egestion Removal of unabsorbed waste from the digestive system as faeces
Name the four types of teeth Incisor,canine,molar and premolar
What is mechanical breakdown Takes place in the mouth by chewing and grinding action of teeth on food
What is chemical digestion Enzyme amylase found in saliva produced by three pairs of slavery glands
What is peristalsis Peristalsis is a wave of muscular action in the walls of the alimentary canal that moves the contents along
Created by: eimeardoyle2014
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