Over the next few weeks we will
be writing non-chronological reports about the digestive system which is our
science topic. For your homework please research the organs of the digestive
system and the journey food takes through our bodies.
During your research take notes
and then turn these into sentences in your own words.
Journey of the food and water
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The human body is made of millions of cells that need food to stay alive. Our body has bones and group of organs which keeps us from turning into jelly.The body gets energy from the food that we eat.Food is consumed by us through the digestive process.
What is the digestive system
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The digestive system is a system that digests our food.It has many stages and takes about 3hours 30min;The digestive system consists of mouth,oesophagus,stomach,small intestine,large intestine & the rectum.
Journey of the food and water
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We take food in through our mouth. The tongue in our mouth, has special glands that let out saliva to help us mix the food and help it digest. The teeth help to cut the food into small pieces before you can swallow.The oesophagus connects into the stomach. The food stays in the stomach for a while.It`s job is to breakdown all the food.TO breakdown the food, the stomach produces lot of acid. Thats when you feel very hungry for food.
When the food is broken down,it passes into the small intestine.The food gets digested when it passes through the small intestine.The small intestine absorbs minerals,vitamins and calcium from the food and water. The small intestine is as long as bus!!. The food spends a lot of time in the small intestine.
After that the food goes through the large intestine. It helps to absorb the remaining water.
At the end the remaining waste goes to the rectum.It is known as the holding station for all the waste. After while it gets full up and gets expelled from the body through the anus.
Regards,
Krish
P.S.Our digestive system had a part which could digest grass and leaves. This is called a Appendix which is connected on the large intestine, but modern humans didn`t use it so it went away.
What is the digestive system?
ReplyDeleteThe digestive system is made up of the gastrointestinal (GI) tract - also called the digestive tract - and the liver ,pancreas , and gallbladder. The GI tract is a series of hollow organs joined in a long ,twisting tube from the mouth to the anus. The hollow organs that make up the GI tract are the mouth ,esophagus ,stomach ,small intestine ,large intestine - which includes the rectum - and anus. Food enters the mouth and passes to the anus through the hollow organs of the digestive system.
The digestive system helps the body digest food.
-Poppy
The Digestive Process.
ReplyDelete1. Ingestion:
The oesophagus is the tube that goes from your mouth to your stomach.
2. Digestion and Absorption:
The stomach is where food starts to get broken down by bile. The liver produces bile which breaks down fat. The small intestine takes broken down food from the stomach and digests it further using digestive enzymes into small particles that can be absorbed into the blood. The pancreas produces digestive enzymes. The next stage is the large intestine where excess water is absorbed.
3. Egestion:
Any undigested food (things that your body can't absorb and use) passes out of the anus as faeces.
Digestive system
ReplyDeleteDigestion breaks down food and gives us energy. There are many organs in the body take part in the digestive system which are:
• Mouth
• Oesophagus
• Stomach
• Liver
• Gall bladder
• Pancreas
• Small intestine
• Large intestine
• Rectum
• Anus
Digestion start from the mouth with the help of sliver and teeth. Sliver contains enzyme which breaks food immediately to small pieces. The smaller food go down the canal called the oesophagus, the canal which makes a journey to the stomach. The food in the stomach breaks down by the gastric juices (acid, juices and sliver mixed together). After that the food has turned to liquid and bits. Bile from the liver is mixed to the liquid. Bile is a bitter greenish alkaline fluid. That liquid moves to the small intestine which is 25 feet long and continue to break down food. The weird liquid flows to the large intestine which is 5 feet long but thick and wide. The large intestine takes away the water and salt and also few more nutrients from the food. The unwanted food would be squashed into a brown lump. Finally the waste flows to the rectum which is the end of the large intestine and then to the anus which the waste becomes poo! The digestive system takes about 24 hours to finish the work.
The digestive system:
ReplyDeleteThere are six organs in our digestive system. They are:
Mouth
Esophagus
Stomach
Small intestine
Pancreas
Liver
The journey of food in stomach:
There are five significant stages in the journey of food leading to the stomach.
Chewing:
When food is chewed it allows us to swallow easily as chewing makes big pieces smaller and easily digestable. Also, saliva in our mouth plays an important role for our digestion as it has special enzymes that help to break down starchy food when we chew it.
Swallowing:
The process of swallowing starts with firstly, our tongue which helps us push food into our throat. After that, the throat muscles force all the food into the esophagus. There are muscles inside the esophagus which push the food into our stomach.
Stomach:
In this stage, the food stays inside the stomach for nearly four hours. During this time, more enzymes work on the food, breaking down things like protein that our bodies can use. Our stomach also does a vital job by killing a lot of bad bacteria, therby not making us get sick.
Small intestine:
The first part of the small intestine uses the juices from the liver and pancreas to continue to break down the food. In the second part the food is absorbed from the intestine into our body through the blood.
Large Intestine:
This is the final stage. Any food that our body doesn`t want or can`t use is sent to the large intestine to leave the body as waste.
The liver and pancreas:
The liver and pancreas help the digestive system a lot by working with the small intestine. The liver provides bile that helps break up fat into smaller bits. The pancreas provides additional enzymes to help digest all different sorts of food. The liver also processes the digested food from the blood before it gets sent to different places in the body to be used.
The Digestive System
ReplyDeleteOur body needs energy to survive and it is the digestive system that takes out the nutrients from the food and gets absorbed in the blood. The digestion occurs in different stages. Each stage is important as it prepares the food for the next stage. The total length of the digestive system is 20 to 30 feet.
The digestive system is made of oesophagus,stomach, liver , pancreas, gall bladder, small intestines and large intestines.
The digestion begins in our mouth from chewing the food. Chewing breaks down the food into little pieces and it gets mixed with saliva which has a special enzyme that starts the breakdown of starchy food(potatoes, bread etc.) while we chew. The next stage is swallowing, some people think that the food just drops down the throat to our stomach but that is not how it actually happens. Special throat muscles force the food down a long pipe called the oesophagus till along way into the stomach. At the same time a flap blocks our wind pipe making sure we do not choke , this flap is called the epiglottis which works automatically. The food stays in the stomach for about 4 hours. While the food is there more enzymes break down proteins to be used in the body. The stomach also kills the bad bacteria that keeps us from falling sick.
The next is the small intestine where the juices from our liver and pancreas still continue to break down the food. It is here where the nutrients get absorbed into the blood. The liver and the pancreas help a lot during digestion in the small intestine. The liver produces a substance called bile which is stored in the gall bladder. It helps to break down fat into small parts. The pancreas on the other hand produces more enzymes to digest all sort of food.
The last but not least is the large intestines where the food which is not needed is stored(rectum) and is excreted out through the anus.
-Sid
Fantastic work everyone. Remember we talked in class about writing in your own words. Keep up the good work!
ReplyDeleteDigestive system
ReplyDeleteWhen we eat, food enters our digestive system. Our digestive system is a series of hollow organs. They are connected by tubes. This system stretches from our mouth, through our body, to our anus.The following organs are part of our digestive system: mouth, esophagus,stomach,small intestine,large intestine.
When we eat, the food first enters our mouth. We chew and swallow the food. It moves down our esophagus. Next, it enters our stomach. From our stomach, it moves down into our small intestine. Then, it passes into our large intestine. Later, it moves into the rectum. It passes out of the body through the anus.
By Oli
Digestive system
ReplyDeleteThe human digestive system is a complex series of organs and glands that processes food.In order to use food we eat as energy, our bodies as to break the food into smaller molecules that it can process;it also has to excrete.Most of the digestive system organs are tube-like and contain the food so it makes its way through the body. The digestive system essentially a long twisting tube that runs from the mouth to the anus, plus a few other organs that produce or store digestive chemicals.Without the digestive system our bodies would not be able to get nutrients from the food we eat or get rid of the waste products that food makes and we will soon become ill!
By Ruben Dias
The Food Journey
ReplyDeleteThe Mouth:
The food journey starts right on your plate.As soon as the morsel reaches your mouth, the teeth start chewing the food into tiny pieces. The tongue moves the food around your mouth. And the digestive acids in your saliva: enzyme and amylase break starches into maltose and dextrin.
The food pipe:
Next the food goes down the food pipe,where it makes contact with your oesophagus. The oesophagus opens the hole in the main pipe and let's food down the food pipe. Due to the oesophagus the food rarely goes down the wind pipe and into your lungs.
The abdomen:
In the stomach the food is digested by the gastric acids: hydrochloride,potassium and sodium. These acids break up the food into nearly microscopic pieces.These pieces go into another pipe which leads into the small intestine.Also the pancreas located in the abdominal cavity behind the abdomen.The pancreas produces insulin and other harpoons as well.So if the pancreas fails you have a large chance of getting diabetes.
The gallbladder:
The gallbladder is an organ located under the liver.It stores bile that is a fluid produced by the liver.
Intestines:
The intestines are tubes which suck all the nutrients out of the foods. The specific part which sucks out nutrients is a small gland at the side of the intestine.These glands also divert the nutrients e.g vitamin a,b,c,d and e to the blood. There are also 2 intestines called the large and small intestine.the small one is thin and long.The big one fat and short.
Urania and anus:
These two parts are used to excrete food and drink.The bum is used to excrete said lid food and the urania is to excrete urine. The faeces goes to the anus via the rectum.
Bladder:
The bladder stores urine.
-Chanakya
Urania and anus:
These two parts are used to excrete food and drink.The anus is used to excrete solid food and the urania is to excrete urine. The faeces goes to the anus via the rectum.
Ps:
DeleteI made a mistake. The oesophagus is the tube that connects the wind and food pipe (not the flap that I thought previously) The flap is called the eppeglottis.
Our digestive system is made of several organs that work together to break down our food into simple parts.
ReplyDeleteOur digestive system goes through six steps:
-The mouth and the teeth cut then grind the food down into small pieces.
-The tongue can helps us swallow food easier.
-Esophagus is a tube that food goes through.
-Stomach is like a mixer, mashing and melting all the small balls of food to become juices and kill bacteria that might be in the food.
-The small intestine is a long tube, it breaks food down and lets the body absorb all the vitamins, minerals, proteins, carbohydrates and fats.
-Lastly all the waste flows to the large intestine and then goes out from the anus.
Digestive system
ReplyDeleteThey are lots of parts that make the digestive system, like the small and large intestine. The small intestine is where most of the digesting takes place. It is 7m long. The large intestine removes extra water and salt. It is 1.5 metres long. The anus is where you poo stay until you go to the bathroom. The stomach is where the food goes in to the milky mixture. It’s like a food blender. It can hold 2-3 litres of food. The oesophagus transports it from your moth to your stomach. It is about 25 metres long. The teeth chew the food into smaller pieces.
The job of the digestive system is to break down the food we eat into smaller units called nutrients in the small intestine. The nutrients are then absorbed into the bloodstream to fuel the body’s activities EG:sport. The mouth takes in food and begins the digestive process using saliva and teeth to break down the food and send it to the stomach through the Esophagus which is a large tube running from your mouth to your stomach,. When the food reaches your stomach it is broken up into tiny pieces called nutrients which then joins the blood flow. The pancreas helps by putting Enzimes through to the small intestine. The small intestine is the main site for digestion in the human body. Water is absorbed from the digestive waste in the large intestine. This results in stools which come out through the anus.
ReplyDeleteDigestive System
ReplyDeleteDefinition:
Our digestive system is a section of organs which are joined with a long twisting tube which is called the digestive track (or the gastrointestinal track).
Importance:
Eating food is an important activity in life because it gives us energy, growth and repair. So we need our digestive system to take out the nutriants and proteins from the food we eat to make us healthy.
How it works:
Our mouth chews our food to break it down but the saliva also helps by crushing down our food even more to help it go down to our oesophagus easily. When our food reaches the oesophagus it we start swallowing our food. Then the stomach digests all of the protein. Finally the bad stuff goes away from the large intestine.
six major functions take place in the digestive system:
• Ingestion
• Secretion
• Mixing and movement
• Digestion
• Absorption
• Excretion
Structure:
The Digestive system is made up of:
Mouth
Throat
Oesophagus
Stomach
Small intestine
Large intestine
Rectum
Anus
Other information:
There are two intestines in our digestive system the small intestine and the large intestine. The small intestine is about 7 meters long and the large intestine is 1.5 meters long. Or in feet the small intestine is 22 feet and the large intestine is 5 feet.
Our body needs food to provide it with energy, vitamins, and minerals. However, in order use food, we must first break it down into substances that the various organs and cells in our body can use. This is the job of our digestive system.
ReplyDeleteThe digestive system acts in stages to digest our food. Each stage is important and prepares the food for the next stage. The entire length of our digestive system is around 20 to 30 feet!
1. Chewing is the first step of the digestive system. When you chew your food it breaks up all the food pieces into little food pieces that are much easier to swallow and digest. Also, your saliva is more than just water. It has special protein in it that start to break down starchy food (potatoes, bread) while you chew.
2. Swallowing may seem like a simple process to us. It just sort of happens. But food doesn't just fall down our throats into our stomach. First, our tongue helps to push food into the back of our throat. Then there are special throat muscles that force the food down into a long tube that leads to our stomach, called the oesophagus. The food doesn't just fall down the pipe, muscles push the food along until it gets to our stomach. At the same time all this is going on, a flap blocks off our windpipe making sure food doesn't go the wrong way. We call this "going down the wrong pipe" and it can make us choke. This flap is called the epiglottis and, fortunately for us, it works automatically.
3. The next stage is the stomach. Food hangs out in the stomach for around four hours. While the food sits there, more enzymes go to work on it, breaking down things like proteins that our bodies can use. The stomach kills a lot of bad bacteria as well, so we don't get sick. The first part of the small intestine works with juices from the liver and pancreas to continue to break down our food. The second part is where the food gets absorbed from the intestine and into our body through the blood.
4. The last stage is the large intestine. Any food that the body doesn't need or can't use is sent to the large intestine and later leaves the body as poo.
-PRITESH
The digestive journey starts with the mouth. When the food enters the mouth enzymes help break up the food. As the food is swallowed it travels through the oesophagus tube. The different organs in your body, like the liver helps to store the energy in the food, and the duodenum helps digest the fats in the food. The rest then travels through the intestines and comes out when you go to the toilet.
ReplyDeleteThe Digestive System
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Mouth
The food starts its magnificent journey of digestion here. The food goes into the mouth and the incisors bite it. The canines are used for cutting meat. The pre-molars and molars chew it. The salivary glands make the saliva (spit) which contains enzymes and it softens the food to help digestion.
Pharynx
The pharynx is the first valve and it prevents the food from going up your nose and connects the nasal cavity to the trachea (wind pipe) and oesophagus (food pipe).
Epiglottis
The epiglottis is located above the oesophagus. It is the second valve and it stops the food from going into the trachea.
Oesophagus
The oesophagus is the tube where the food continues the journey of digestion. It is a unique organ in the digestive system because it contracts the muscles in it and pushes the food into the stomach and this process is named peristalsis.
Stomach
The stomach is the main organ in the digestive system along with the small intestine and it is essential in your body. The stomach appears very small when it is empty whereas when full it can contain over 1 litre of food. It is like a walled bag of muscles and contracts so the food inside becomes a pulpy liquid called chyme and travels to its next destination by the muscles relaxing. The stomach is lined with mucus so it doesn’t digest itself.
Liver
The liver is placed on the left side of the body north west of the stomach and the gallbladder. It is the largest internal organ in the body after skin. It is a brown coloured organ. The liver produces a bitter yellow or greenish liquid which is called bile. Bile is stored in the gallbladder and digests fat. It separates the complex substances (carbohydrates, fats, proteins) into simpler nutrients. It also maintains the level of glucose by storing it as glycogens and turns it back into energy (glucose) in seconds. The liver’s last function is replacing the old red blood cells with new.
Pancreas
The pancreas is a 6 inch long carrot shaped organ which lies underneath the stomach. It produces 2 different types of tissue such as Langerhans and Exocrine. One produces hormones and the other produces pancreatic enzymes.
Gallbladder
The gallbladder is an egg shaped green organ that sits above the stomach. It stores the bile. When we need it the bile travels to the small intestine. It can preserve up to 50ml of bile.
Small intestine
It is the second last organ in the digestive system. (WARNING: DO NOT TRY THE FOLLOWING AT HOME) If you stretched it out on the floor it could probably cover a whole tennis court. The enzymes, bile and gastric juices help absorb the chyme here. The small intestine is broken down into 3 different parts: duodenum, jejunum and the ileum. The duodenum mixes the chyme with enzymes and bile to break it down into molecules that can be absorbed. The jejunum helps absorb glucose through the villi and into the bloodstream to be transported to the body. The ileum helps absorb vitamin B12. If the food is of no use it gets pushed out into the large intestine.
Large intestine
The large intestine is like a sock filled with table tennis balls and goes around the small intestine. There are around 700 different kinds of bacteria in your body and most of them are good bacteria? A part of the large intestine is called the cecum. The other part is called the colon. Once the chyme is pushed out it goes past the rectum and is pushed out through the anus as waste.
By Om