Egestion - The removal of non-metabolic waste from the body, Omnivores - Animals that eat both plants & animals, Chemical digestion - Breakdown of food carried out by enzymes, Why digestion is necessary - Makes food soluble, Peristalsis - Muscular contractions which move food along the alimentary canal, Chyme - Churned up food from the stomach, Amylase - An An enzyme that breaks down starch to maltose, Pepsin - An enzyme that breaks down proteins to peptides, Lipase - An enzyme that breaks down lipids to fatty acids & glycerol, Bile - Neutralises acid chyme & emulsifies lipids, Emulsification of lipids - Mechanical breakdown of lipids, Gall bladder - Stores bile, Pancreas - Secretes a range of enzymes, Duodenum - First 30 cm of small intestine, Ileum - Last portion of small intestine, Villi - Finger like projections inside small intestine, Lacteals - Lymph vessels inside villi that absorb lipids, Liver - An organ that stores vitamin D & glycogen, Hepatic Portal Vein - A blood vessel connecting ileum & liver, Deamination - Breakdown of amino acids into urea, Symbiosis - A relationship between species where both benefit, Symbiotic bacteria in the colon - Produce vitamin K & digest cellulose, Balanced diet - Eating the right amount of each food type, Food pyramid - Details the right amount of each food type to eat, Fibre - Stimulates peristalsis,
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28 Digestive System
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