YOSHE-BIOLOGY-animal survival-mechanical breakdown of food

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BIOLOGY-animal survival-mechanical breakdown of food

teeth

tooth decay

flurides in toothpaste strengthen the enamel and make it more resistant to acid

bacteria change your food to acid, which attacks the enamel

caused by bacteria in your mouth mixing with saliva to from plaque

types of teeth

herbivores

molar-for chewing and grinding

premolar-used for chewing and grinding

gap-no canines present

incisor-for biting against horny/hard pad and shearing grass at its roots

horny/hard pad

carnivores

molar-for crushing bones

carnassial-for shearing flesh

premolar-for crushing bones

canine-for holding and piercing prey

incisor-for biting

omnivores

molars-grind and chew food

premolars-also chew up food

canines-to tear food

incisor-to bite food

how food is broken down

2 steps

chemical breakdown by enzymes eg-starch(insoluble) >enzymes> glucose(soluble)

mechanical breakdown by teeth

food is broken down into smaller soluble particles that can pass from the small intestine into the bloodstream