Revision: Digestive System
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Digestion Song Let’s listen to a song
Digestion Blues Digestion starts in the mouth, Where the food’s chewed up before it heads South. The salivary glands make it all wet, And it’s there that the food starts to digest. CHORUS: Chew it up and swallow those itty-bitty pieces, Take out all the good stuff, in the end it turns to faeces. Churn it up and swallow it, turn it into goo. Now you get to sing those digestion blues.
The esophagus squeezes the food on down, And into the stomach, that’s where it’s found. The gastric juices break down the food, And the stomach muscles churn it up, so it can be used. CHORUS: Chew it up and swallow those itty-bitty pieces, Take out all the good stuff, in the end it turns to faeces. Churn it up and swallow it, turn it into goo. Now you get to sing those digestion blues.
The pancreas and liver add insulin and bile. It’s in the duodenum for just a little while. This gooey, gooey muck is now called chyme, It’s nutrients are taken in the small intestine. CHORUS: Chew it up and swallow those itty-bitty pieces, Take out all the good stuff, in the end it turns to faeces. Churn it up and swallow it, turn it into goo. Now you get to sing those digestion blues.
It’s in the large intestine where the water’s taken out, The chyme’s compacted nicely, of this there is no doubt. It passes through the rectum, the anus is at the end, The sphincter muscle contracts, your bowel movement begins. CHORUS: Chew it up and swallow those itty-bitty pieces, Take out all the good stuff, in the end it turns to faeces. Churn it up and swallow it, turn it into goo. Now you get to sing those digestion blues.
Revision Digestive System
Gullet Mout h
Parts of a digestive system Small intestine
Large intestin
Stomac h
Anus
2 main function digestive system 1. Breaks down food into simple substances. 2. Absorbs the simple food substances so that they can be used by the body
What is digestion?
c hew
Broke n down
The process where food is chewed and broken down into simple substances in the body.
Starting from
The Mouth
The teeth chews and grinds food into smaller pieces. The saliva makes food soft enough to swallow. The digestive juices in the saliva helps digest food slightly.
Next The Gullet
gulle t
Allows food to move from the mouth down to the stomach.
To the Stomach Food is crushed further and mixed with digestive juices. After some time, the food will look like a ‘thick soup’.
The Small intestine More digestive juices are added to the food. Food substance are so tiny that they can pass through the walls of intestine.
The Water Absorber-
Large intestine This is where the undigested food go! Most of the water is removed from the food here. Large intestine
The last step-
The Anus
The undigested food is passed out of the body as waste through an opening called the anus. The anus
What do you think? Which organ system(s) do we need the least? Explain your answer. The digestive system. If we do not eat for a few days, we will not die. ✗ There is no one system we need the least because all the organ systems need to work together to enable us to function properly.
The question Food is mixed with digestive juices in the ______________. It becomes a thick ‘soup’ after a few hours. It is then passed into the ________________ where the useful bits are absorbed into the _______________. Undigested food is later passed out of the body through the ________.
What do you think? Food is mixed with digestive juices in the stomach. It becomes a thick ‘soup’ after a few hours. It is then passed into the small intestine where the useful bits are absorbed into the large intestine. ✗ Undigested food is later passed out of the body through the anus.
Which part (A,B,C, D or E) is food being digested and passed into the blood vessels?
A B C D E
Answer: B ✗
In what way is a balloon like the stomach?
The shape. ✗ It is smaller when empty and expands when it is full.
Let’s learn together!
Which of the following does not take place in the mouth during digestion? Saliva makes the food soft enough to swallow. Our tongue shapes the food into a ball. Our teeth chop up the food into smaller pieces. Digested food is absorbed into the blood.
✔
When undigested food reaches the large intestine, ___________ is removed from it. Water Urine Carbon Dioxide Solid waste
✔
Name one function of the digestive system. Mouth, gullet, stomach, small intestine, large intestine and the anus. Heart, blood vessels, blood. Break down food into simple substances. Carry food, water and oxygen to all parts of the body.
✔
In the digestion process, food is broken down into simpler substances. In which part of the body is the digested food being absorbed into the blood?
Gullet Mouth Stomach Small Intestine
✔
In which part of the digestive system are the digestive juices found in the system? mouth and stomach small intestine and large intestine mouth, stomach and small intestine mouth, stomach, small intestine and large intestine
✔
Which of the following explains why food must be completely digested before it can pass through the blood stream? Undigested food particles are too big to pass through the walls of the small intestine into the blood stream Undigested food particles are too big to be carried in the blood. Absorption into the blood stream will not start unless all the food is digested. Undigested food particles contains waste materials that may poison the blood.
✔
Mini-Quiz
The digestion of food is completed
In the large intestine In the small intestine
✔
QUIZ TIME! What helps to break the food even further in the stomach? The salivary glands in the stomach helps us to break down the food even further. The gastric juices in the stomach helps us to break down the food even further.
✔
Undigested food goes to the
Large intestine Small intestine
✔
Digestion starts in the mouth and ends in the large intestine.
True False
✔
Normal faeces are solid.
True False
✔
Digestion Blues Digestion starts in the mouth, Where the food’s chewed up before it heads South. The salivary glands make it all wet, And it’s there that the food starts to digest. CHORUS: Chew it up and swallow those itty-bitty pieces, Take out all the good stuff, in the end it turns to faeces. Churn it up and swallow it, turn it into goo. Now you get to sing those digestion blues.
The esophagus squeezes the food on down, And into the stomach, that’s where it’s found. The gastric juices break down the food, And the stomach muscles churn it up, so it can be used. CHORUS: Chew it up and swallow those itty-bitty pieces, Take out all the good stuff, in the end it turns to faeces. Churn it up and swallow it, turn it into goo. Now you get to sing those digestion blues.
The pancreas and liver add insulin and bile. It’s in the duodenum for just a little while. This gooey, gooey muck is now called chyme, It’s nutrients are taken in the small intestine. CHORUS: Chew it up and swallow those itty-bitty pieces, Take out all the good stuff, in the end it turns to faeces. Churn it up and swallow it, turn it into goo. Now you get to sing those digestion blues.
It’s in the large intestine where the water’s taken out, The chyme’s compacted nicely, of this there is no doubt. It passes through the rectum, the anus is at the end, The sphincter muscle contracts, your bowel movement begins. CHORUS: Chew it up and swallow those itty-bitty pieces, Take out all the good stuff, in the end it turns to faeces. Churn it up and swallow it, turn it into goo. Now you get to sing those digestion blues.
Revision Digestive System
Gullet Mout h
Parts of a digestive system Small intestine
Large intestin
Stomac h
Anus
2 main function digestive system 1. Breaks down food into simple substances. 2. Absorbs the simple food substances so that they can be used by the body
What is digestion?
c hew
Broke n down
The process where food is chewed and broken down into simple substances in the body.
Starting from
The Mouth
The teeth chews and grinds food into smaller pieces. The saliva makes food soft enough to swallow. The digestive juices in the saliva helps digest food slightly.
Next The Gullet
gulle t
Allows food to move from the mouth down to the stomach.
To the Stomach Food is crushed further and mixed with digestive juices. After some time, the food will look like a ‘thick soup’.
The Small intestine More digestive juices are added to the food. Food substance are so tiny that they can pass through the walls of intestine.
The Water Absorber-
Large intestine This is where the undigested food go! Most of the water is removed from the food here. Large intestine
The last step-
The Anus
The undigested food is passed out of the body as waste through an opening called the anus. The anus
What do you think? Which organ system(s) do we need the least? Explain your answer. The digestive system. If we do not eat for a few days, we will not die. ✗ There is no one system we need the least because all the organ systems need to work together to enable us to function properly.
The question Food is mixed with digestive juices in the ______________. It becomes a thick ‘soup’ after a few hours. It is then passed into the ________________ where the useful bits are absorbed into the _______________. Undigested food is later passed out of the body through the ________.
What do you think? Food is mixed with digestive juices in the stomach. It becomes a thick ‘soup’ after a few hours. It is then passed into the small intestine where the useful bits are absorbed into the large intestine. ✗ Undigested food is later passed out of the body through the anus.
Which part (A,B,C, D or E) is food being digested and passed into the blood vessels?
A B C D E
Answer: B ✗
In what way is a balloon like the stomach?
The shape. ✗ It is smaller when empty and expands when it is full.
Let’s learn together!
Which of the following does not take place in the mouth during digestion? Saliva makes the food soft enough to swallow. Our tongue shapes the food into a ball. Our teeth chop up the food into smaller pieces. Digested food is absorbed into the blood.
✔
When undigested food reaches the large intestine, ___________ is removed from it. Water Urine Carbon Dioxide Solid waste
✔
Name one function of the digestive system. Mouth, gullet, stomach, small intestine, large intestine and the anus. Heart, blood vessels, blood. Break down food into simple substances. Carry food, water and oxygen to all parts of the body.
✔
In the digestion process, food is broken down into simpler substances. In which part of the body is the digested food being absorbed into the blood?
Gullet Mouth Stomach Small Intestine
✔
In which part of the digestive system are the digestive juices found in the system? mouth and stomach small intestine and large intestine mouth, stomach and small intestine mouth, stomach, small intestine and large intestine
✔
Which of the following explains why food must be completely digested before it can pass through the blood stream? Undigested food particles are too big to pass through the walls of the small intestine into the blood stream Undigested food particles are too big to be carried in the blood. Absorption into the blood stream will not start unless all the food is digested. Undigested food particles contains waste materials that may poison the blood.
✔
Mini-Quiz
The digestion of food is completed
In the large intestine In the small intestine
✔
QUIZ TIME! What helps to break the food even further in the stomach? The salivary glands in the stomach helps us to break down the food even further. The gastric juices in the stomach helps us to break down the food even further.
✔
Undigested food goes to the
Large intestine Small intestine
✔
Digestion starts in the mouth and ends in the large intestine.
True False
✔
Normal faeces are solid.
True False
✔
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