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Digestive system
| Question | Answer |
|---|---|
| What organ comes after the small intestine? | The organ that comes after the small intestine is the large intestine |
| What is the function of the stomach? | The function of the stomach is to break food into sugar or amino-acid or fatty acid using enzymes and acid |
| Does the gall bladder come before or after the stomach? | The gall bladder comes after the stomach |
| how does digested food reach the blood stream? | it is absorbed into the blood stream when small molecules go through the small intestines' walls |
| What is the function of the large intestine? | The large intestine's function is to absorb the water from the waste |
| what is the function of the digestive system. | to take in and break up food for use in the body; smaller molecules can then be absorbed (go through) the small intestines |
| What is the long tube that takes (pushes) food to the stomach | oesophagus |
| What lets out enzymes into the duodenum | gall bladder |
| Explain the role of bile in digestion. | neutralises acid / eq (1) optimal pH for enzymes / lipase eq (1) emulsifies lipid (1) breaks down (large droplets) into small droplets / eq (1) increases surface area for enzyme action /eq (1) |
| Where are digested molecules of food absorbed? | small intestine |
| Which body part of the digestive system removes the water from food | large intestines |
| what helps food not go down the wind pipe | the epiglottis |
| What is the scientific word for the wind-pipe? | Trachea |
| Where is the digestion of proteins completed in? | Small intestine |
| What happens when food reaches the stomach? | Juices mix with the food and stomach muscles squeeze it. |
| Where does the digestion begin? | In the mouth when enzymes (amylase) in saliva start breaking down starch |
| How does the liver contribute to digestion? | It does NOT! The function of the liver is to destroy poisons |
| What is the rectum? | The temporary storage area for faeces |
| what does the stomach produce? | hydrochloric acid. |
| after the stomach where does the food travel next? | The small intestine |
| why do we have teeth | to break down big giant pieces of food our lower organs cannot pass through |
| why do we need (amino acids from) proteins? | for growth, and repair of cells |
| why do we need (fatty acids from) fats? | for insulation and energy storage |
| why do we need (sugar from) starch? | for energy |
| why do we need vitamins and mirerals? | good working of the body |
| What is another name for the food pipe? | Oesophagus |
| What does the large intestine do? | Reabsorbs water: the water goes from the large instestine through the intestines walls into the bloodstream |
| Explain how the villi are adapted for their function | The villi create a large surface area in the intestines: the more surface area, the more molecules will move from the intestines into the blood stream |
| What happens to the food when it is going down the oesophagus? | The muscles contract |
| Food is being pushed down the oesophagus by contraction of a muscle. What is the name of this process? | Peristalsis |
| Explain why only sugar can get into the blood (and not starch)? | because sugar is small so it goes through the walls of the intestines |
| what happens to fibres in the small and in the large intestines? | Nothing! The fibres simply get pushed along by peristalsis |
| what is the name for the movement that pushes food along the digestive system? | peristalsis |
| what is the function of saliva? | produces enzymes (amylase) to start digesting starch; moistens the food to helps with swallowing |
Created by:
ursulinebio
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