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

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