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Science-Digestive
Digestive System Test
| Term | Definition |
|---|---|
| When food is_______ and broken down into_____ ______ | Mashed, Smaller Pieces |
| When ____ produced by ____ breaks ____ into _______ and ______. | Saliva, Glands, Carbohydrates, Simple Sugars, Nutrients |
| What Kind(s) of digestion were at work when the cracker was in your mouth and you were NOT chewing? | Chemical |
| What Kind(s) of digestion were at work when the cracker was in your mouth and you WERE chewing? | Mechanical and Chemical |
| The fluid in your ____ by _______ Two Main Functions: 1.____________ 2.________ | Mouth, Salivary Glands Break down carbohydrates Soften your food |
| Digestive System | A series of tube like organs called the digestive tract. |
| Digestive Tract | Food passes through |
| Organs | Mouth, Pharynx, Esophagus, Stomach, Small Intestine, Large Intestine, Rectum, Anus |
| Mechanical Digestion | the breaking, mashing, and grinding of the food |
| Chemical Digestion | large molecules are broken down into nutrients |
| Teeth | Help the Mechanical digestion breaking down into smaller pieces |
| Enamel | The hardest material in the body |
| Molars | grinding the food |
| Premolars | mashing the food |
| Incisors, Canines | Shredding the food |
| Saliva | Contains the enzymes that start chemical digestion |
| Esophagus | Squeezes the food with rhythmic muscle contractions |
| Stomach | Digestive organ attached to the esophagus |
| Digestion | stomach squeezes food with muscle contractions |
| Enzymes | break down food into nutrients |
| Chyme | Partial Digested food in the stomach |
| Pancreas | makes fluids that protect the small intestine from the stomach acid |
| Small Intestine | Absorbs nutrients into the bloodstream through villi |
| Liver helps with digestion by: 1. 2. 3. | makes bile to break up fat stores nutrients breaks down toxins |
| gallbladder | stores bile made from the liver |
| large intestine | absorbs excess water and turns the rest on chyme into human waste and then it is released out of the body |
| Where does mechanical digestion take place? | Mouth and Stomach |
| Where does chemical digestion take place? | Mouth and Intestines |
| Peristalsis | Rhythmic muscle contractions that forces the food into the stomach |
| What occurs in the stomach? | Mechanical and Chemical digestion; Acid= chemical Muscle contractions= mechanical |
| Could chemical digestion take place if mechanical digestion did not occur first? | No! Chemical digestion relies on the mechanical digestion to break food down into smaller pieces. |
| After nutrients are broken down, where do they go? | villi, finger like projections lets the nutrients pass into the bloodstream. |
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