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11754 Science
7 Digestive System Review
Question | Answer |
---|---|
What are the five main food groups? | Dairy, Meat, Vegetable, Fruit, Bread |
Name three things a food label tells you? | Calories, carbohydrates, fat |
How do you find out what is the largest ingredient in a food? | The ingredient that comes first |
What does serving size on a label mean? | It says what and how much your are eating. |
Name two common diseases of the digestive system? | Constipation and Diarrhea |
What is the purpose of the digestive system? | A collection of organs that work together to breakdown food so that it can be used by the body. |
List the path that food takes through the digestive "tract" | Mouth, Throat, esophagus, stomach, large intestine, small intestine, anus |
Does food travel through the liver, pancreas and gall bladder? | No. Liver makes bile which is stored in the liver which is used to breakdown food in the stomach. Pancreas is a fish shaped organ that makes pancreatic juice that is made up of digestive enzymes and bicarbonate to neutralize acid in the intestine |
What is the difference between mechanical and chemical digestion? | Mechanical breaks food into smaller pieces, chewing. Chemical attacks food with enzymes to break it apart it nutrients and help the body absorb it. |
Explain how mechanical AND chemical digestion takes place in the mouth? | Food enters the body through the mouth, chewing occurs, and saliva starts to break it down and help lubricate it to be swallowed. |
What are enzymes? | 569. Enzymes are special substances that break down nutrients into smaller particles that the body can use. They break it down into proteins. |
Where are enzymes found in the digestive system? | Enzymes are chemicals that help breakdown food into nutrients. |
What is peristalsis? | Peristalsis is the process by which the esophagus squeezes the mass of food with "rhythmic muscle contractions". |
What is the function of the gallbladder? | The Gall bladder temporarily stores bile and secretes it into the small intestine. |
What are the functions of the liver? | 1. Makes bile which breaks down fat. It is stored in the ball bladder. 2. Stores nutrients. 3. Breaks down toxic substances in blood. 4. Makes cholesterol for cell membranes |
What are the functions of the pancreas? | 1. Secretes more enzymes into the small intestine and absorbs nutrients. 2. Creates bicarbonate which helps neutralize acid. 3. regulates blood sugar by secreting insulin. |
What happens to food once it is in the stomach? | 1. Continues mechanical digestion. 2. Enzymes and acids help chemically digest food. 3. Acid environment helps kill bacteria. 4. Food is reduced to chime - Soupy mixture of digested food. |
Once the chime is in the small intestines, what happens to the nutrients? What happens to waste? | Chime/chime is a mixture or broken down food/soupy mixture in the stomach. It is slowly released into the small intestine where it is mixed with digestive fluids. |
How do villi help your cells? | Villi are small finger like projections from in the small intestine. They are covered with tiny nutrient-absorbing cells that help nutrients into the body. |
What are the main organs of the digestive system: | Mouth, stomach, small intestine, large intestine. |
what is saliva? | It is a chemical that mixes with food in your mouth. It contains a chemical that can change starch into sugar. The it can be absorbed into blood. |
The body gets it raw materials from food by the process of____ | digestion |
Food enters your body through the? | mouth |
The liquid in your mouth is called | Saliva |
Saliva contains a chemical that changes starch into ____ | sugar |
Digestion is the breaking down of food into | nutrients |
In what order does this process take place in the digestive system? 1, 2, 3, or 4 Food is mixed with chemicals | 2 |
In what order does this process take place in the digestive system? 1, 2, 3, or 4 Nutrients from the food go into the blood. | 3 |
In what order does this process take place in the digestive system? 1, 2, 3, or 4 Food is ground up | 1 |
In what order does this process take place in the digestive system? 1, 2, 3, or 4 The unused part of food is sent out of the body. | 4 |