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| Question | Answer |
|---|---|
| label parts on diagram | 1. incisor 2. soft palate 3. uvula 4. tongue 5.tonsil 6.cheek 7.epiglottis 8.molar 9. premolar 10. gum 11. hard palate 12.salivary gland 13.esophagus 14.stomach 15.small intestine 16.pancreas 17.liver 18.gallbladder 19.large intestine 20.appendix 21.anus |
| what juices are made in the salivary glands, stomach,liver/gallbladder and pancreas? | saliva(salivary glands)water+enzymes=starch->sugar stomach juice(stom.)neutralizes stom.acid pancreatic juice(pancreas)natural antacid neutralizes stom.acid on foods exiting stom. bile-made in liver stored/secreted in gallbladder cuts fat into small dr |
| what are the 3 overall functions of the digestive system? | 1. absorb nutrients/water 2. create energy for cells 3. get rid of waste |
| why is it considered a system? | It is considered a system because it has a group of parts (organs)that interact to preform a common function(break down food) |
| where/how do physical changes of a pbj sandwich take place along the way? | ????? ************* |
| Where are 3 major nutrients chemically changed? | The starch in the bread is broken down into sugar by saliva in the mouth. The Fat in part of the peanut butter is changed into fat molecules in the small intestine. The protein in rest of the peanut butter is changed into amino acids in the stomach |
| What are the breakdown products of starch protein and fat? | The breakdown products of: starch=sugar molecules protein= amino acids fat= fat molecules |
| What is absorption? | Absorption is nutrients broken down from foods passing through the walls of an organ into the bloodstream(circulatory system) |
| Where are the breakdown products of starch, protein and fat absorbed? what about water? | The breakdown products of starch, protein and fat are all digested in the small intestine. water is absorbed in the large intestine.********** |
| List the organs food does not pass through. | Salivary glands, liver, gallbladder, pancreas and appendix |
| why are the liver and the salivary glands important? | Salivary glands secrete the saliva into the mouth that breaks down starch. without it we couldn't digest starch. Liver makes bile that slices fat. The gallbladder stores and secretes bile so fat can become smaller and be digested easier. |
| Why are the pancreas and the appendix important? | The pancreas is important because it secretes pancreatic juice that neutralizes stomach acid on food entering the small intestine so it can't harm the lining. the appendix doesn't have a function anymore. it used to digest fiber but no longer does |
| How is the digestive system like a car wash? | The digestive system is like a car wash because in both you are pushed through a tunnel and tings are squirted on you. in a car wash it might be soap or was but in the digestive system it might be pancreatic juice or saliva. |
| How is the structure of each part of the mouth well designed for it's function? | the___is well designed because____ tongue is very strong- has to swallow cheeks are thick, don't let food through palate???? uvula is the right size to block the windpipe hole gums hold teeth in place |
| what is each type of tooth designed for? | incisors- for cutting and slicing through food canines-tearing food molars and premolars are for grinding food 8 incisors, 4 canines, 8 premolars, 12 molars |
| what role does saliva play in the mouth? | saliva moistens the mouth, digests starch, and helps food exit the mouth and enter the esophagus |
| what is a physical change?(physical digestion) give an example | A physical change is when the way the food looks is changed. the outside of the food looks different but nothing changes chemically. An ex. is teeth chewing food it's ripped into small pieces so it looks different but food |
| What is a chemical change?(chemical digestion) give an example | A chemical change is when the chemicals in food change. A chemical change might also be a physical change. ex- saliva in the mouth breaks starch down into sugar so it now has a different chemical makeup. the food also looks different because of this. |
| What are enzymes? How are they important? give an example of enzymes at work. | Enzymes are a group of proteins that control all chemical changes in the body. Enzymes are important because other wise our body wouldn't have any chemical reactions an example of enzymes at work is saliva breaking down starch some make new cell membranes |
| Describe the structure of the stomach. relate stomach to function | the stomach is a muscular pouch on the left side of the body. The stomach is big enough to store food, the muscles contract to churn food and the acid in it digests protein. |
| describe the structure of the small intestine and relate structure to function | the small intestine is an very long narrow tube that's covered with millions of tiny projections. the vast space in the small intestine provides plenty of nutrient absorption space. the smooth muscle that makes up the walls contracts food through |
| What are villi? How are they important in to the function of the small intestine | Villi are the tiny, finger like projections that cover the walls of the small intestine. The are important to the function of the small intestine b/c the small intestine absorbs nutrients and they provide more space for that. |
| What is diffusion? | Diffusion is the process of a highly concentrated area of molecules, spreading equally to a lower concentrated area of molecules so there is an even concentration |
| How can small molecules diffuse through the small intestine to the blood stream? | Small molecules are absorbed through the walls of the small intestine because they are small enough to cross it's membrane. the bloodstream is what's on the other side so that's what they diffuse into. |
| what is concentration? | number of molecules of a substance in a given volume |
| Why do other body systems need the digestive system? | Other body systems need it for energy that comes from digested food. an example of this is the muscular system. muscles are made of protein which the digestive system gets for them |
| Why does the digestive system need other body systems? | to benefit from it's work. all cells need food to live and they get it from the digestive system. the circulatory system carries nutrients so other cells which use them for energy. teeth are part of the skeletal system which chews food. |
| Explain how this statement can be true. As it travels down the digestive tract, food is not actually in our body. | when you eat, you are feeding your cells not your body, so when food is still being digested, it is not yet in your cells, therefore not yet in you. |
| Why is the digestive system made of so many parts? | because so many things need to happen to food before it has finished the digestion process. There are many different nutrients to break down. Water needs absorbe. waste need to be removed. The entire process is so complicated it requires many parts |
Created by:
jlesnick
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