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lesson 4 (pg.69-71)
6th: digestive/renal (lesson 4)
| Question | Answer |
|---|---|
| digestive system | takes the food you eat and converts it into materials your body needs to live, repair itself and grow. |
| the part of your digestive system that food passes through | gastrointestinal tract/alimentary canal/digestive tract |
| three nutrients you need the most of | carbohydrates, proteins and fats |
| last step in digestion | defecation |
| mechanical digestion | grinding up and moving along of food |
| four types of teeth | incisors, cuspids, premolars and molars |
| hardest substance in the body | enamel |
| T/F....dentin is alive | true! it contains cells |
| location of nerves and blood vessels in your teeth | pulp |
| the part of the tooth you see above your gums | crown |
| chemical digestion | the breaking down of larger food molecules into chemical building blocks |
| first step in chemical digestion | saliva production |