level: mechanical digestion
Questions and Answers List
level questions: mechanical digestion
| Question | Answer |
|---|---|
| incisors (front teeth) | slice and cut food |
| canines | grips food and holds in place |
| premolars | crush and chew food |
| molars | grinding surface |
| what does the root do | embedded in the gumto anchor tooth in mouth |
| what does the enamel do | hardest substances made by animals. covers the tooth and provides a tought surface for biting and chewing |
| dentine | bone liek structure under the enamel. contains cytoplasm and tubes running through the pulp cavity outwards which are filled with blood vessels and nerves |
| pulp cavity | hollow middle of the tooth, contains nerves and blood vessels which supply the cytoplasm with food and oxygen |
| cement | covers the root of tooth |
| what causes tooth decay | bacteria stick to teeth and produce plaque, bacteria respire and produce an acid which decay the enamel and dentine on teeth. |