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Digestive System :D

Science: Body/Organ system Project

Michael Nguyen

on 5 March 2011

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Transcript of Digestive System :D

Digestive System Possible Problems Site of Exchange How it works mouth Salivary glands esophagus small intestine large intestine tongue liver pancreas stomach Salivary glands are glands in
the mouth that produce saliva. Saliva: Saliva is a clear liquid that helps to keep the mouth moist and comfortable. It contains a little bit of mucus and salts to help make the food we eat slippery and easy to swallow. The liver's job is to regulate
and control many of the body
systems, the temperature of our bodies and the water and chemical levels and it is also the largest organ in the body.
The liver is composed of many small structures(Lobules) that lies under the diaphragm. Food gives us energy to do activities throughtout the day and provides nutrients to keep our bodies healthy
and fit. Without food, we can't grow and let our bodies repair itself from
injuries. The digestive system is made up of a
very long tube,the alimentary canal,
from the mouth until the end of the anus.
Whenever we eat any food,
right away the breaking down
process, Digestion, begins.
How the digestive system
works is that there are
four steps of digestion. 1.Ingestion: 2.Digestion: 3.Absorbing 4.Eliminating: The picture above shows the
five main food groups. It all starts off when you first bite
into some food or take a sip of your
beverage. The food goes on a journey
down the digestive tube. This is where food enters
and inside the mouth there
are the teeth, the tongue
and the tonsils. anus An opening where feces(solid waste)
leaves the body. mmm... The tongue is a muscle
that helps to move the
food around in the mouth
as we chew. There are
electric signals sent from
nerves to the brain as
we chew food. An pinkish-grey organ behind the stomach which poduces important
digestive enzymes from the pancreatic juice and hormones,
such as insulin,to make sure
the amount of sugar in the blood
is normal. The job of the large intestine
is to take the materials that
were not digested from the
small intestine and absorb the
water and some of the materials
again. The esophagus is a part of the digestive
tube that is connected to the pharynx where
food goes through. The stomach is a muscular bag that stores the food
after we eat. The stomach
produces these digestive
juices to break down the food into liquid.
The small intestine is connected to the stomach and the large intestine.
Digestion and absorbing nutrients
takes place in the small intestine.
It lets the large intestine deal with the waste it leaves. - Obesity: Is an excess of body fat or in
medical terms being "overweight".
Obesity is caused of taking in too much food than you need or not being active. This can lead you to the risk of heart disease,diabetes,
having strokes, and asthma. - Eating Disorders: a) Anorexia nervosa
b) Bulimia nervosa - Heartburn: - Indigestion: - Colon Cancer: Stomach problems Nutritional problems Intestinal problems - Diarrhea: - Constipation: - Inflammatory diseases: - exp: Crohn's disease - Hernia: - Irritable Bowel Syndrome (IBS): References By: Michael Nguyen Gall Bladder The gall bladder is a small, pear shape-
like organ that is placed under a lobe
of the liver. It produces mucus for
lubrication and stores bile which makes
it more concentrated by absorbing water
from it. Bile:a liquid produced by the liver that
helps to break down fats Heartburn can be caused by eating to much,
being emotional(being upset or stress) or
certain foods. Some symptoms of heartburn is
having a burning feeling in the middle of
the chest. To avoid having this is to eat proportional meals, have less
stress and avoid trigger foods. If you do have this, you
should neutralize the stomach
acid by taking antacid tablets. After eating a meal, you might somtimes have
sick, painful, and bloated feeling. This is
indigestion but it's not serious so it will go
away usually. The intestines can swell up which can cause cramping and fevers.Some doctors say that it's due to an infection or a food allergy. You can treat this
by using diarrhea cures or vitamins if it's not serious. If it is serious, drugs may be given to hold down the immune system. Constipation is when you go to the
washroom and it is difficult to get
the feces out because the wastes may
move very slowly in the large intestine of having too much water being absorbed. This is caused by
not being active, stress, and a lack of fiber in meals. To deal with it, just take mild laxatives to soften the feces. Diarrhea is when you go to
the washroom and there are
soft, watery feces. This happens when the waste moves too quickly in the large intestine of having the water not properly absorbed. This caused by eating spoiled or infected food, being very nervous or stressed and taking medications. To prevent this, You should practice having good hygiene like washing your hand before and after meals. To treat it, drink lots of water. Colon cancer is very common
for people who have diets who
consume more animal fat than fiber. This may cause diarrhea,
constipation, bleeding from the
rectum and having dull pain.
Surgery is sometimes necessary
to treat. People who suffer this have alternating periods of diarrhea and constipation, abdominal pains, sick feeling and losing appetite. This condition links
to stress and depression. Having more fiber in your diet may help or take drugs to manage the symptoms. Hernia is a lump that appears
when a loop of intestine sticks
out through the abdominal wall
lining. It is relatively common
from an inborn weakness, a serious cough or the pressure of lifting heavy objects. This can be treated with surgery or wearing a special belt. People with anorexia are really cautious
about their mass. They tend to eat very little amounts of food at meal times or just skip the meals altogether. Also they try to hide how little they eat by piling their plate with food. This can cause great damage to their bodies which can lead to organ failure and death. People with bulimia really care about
being overweight and their body shape.
First, they would eat a little then they
would go on an eating spree . Afterthat,
they make themselves vomit to get rid of
the food. Vomiting repeatedly can lead to
serious health problems. This is the end of the digestion process which is elimination. The undigested materials at this stage
are known as feces, which are solid wastes, that is stored in the rectum. Liquid waste, urine, is stored in the bladder. After, it leaves the body through the anus. It takes from 20 to 30 hours to do the whole process. Our body has particles that can be absorbed into the blood and deliver it to every part the body.This is where the small intestine absorbs the nutrients by using villi (fold-like structures in the wall of the
intestine) to pick the nutrients and leaves the large intestine with the waste. When the wastes and undigested materials from the small intestine pass by, the large intestine reabsorbs the water and a few materials into the bloodstream. Then, the waste becomes more solid and drier. Duodenum The duodenum is part of the small intestine
between the stomach and the jejunum (another
part of the intestine). It contains digestive juices
the liver and the pancreas that is added to the
chyme. Chyme: partly digested liquid food that
leaves the stomach The esophagus brings down the food to the stomach to be digested. Food is digested in 2 ways. Physical Digestion: The food is broken down into
smaller pieces by using the teeth, tongue and muscles
by that push the food in the alimentary canal. Chemical Digestion: The food is broken down by
enzymes and other chemicals at a variety of steps.
Physical digestion made this process a lot easier
because the food has be broken into smaller pieces. Enzymes:protein that speeds up chemical reaction The stomach has digestive juices that
break down food until it is liquid. There are special glands in the stomach
that produces gastric juice. Gastric Juice contains pepsin that breaks down proteins. Hydrochloric Acid which is a strong acid that keeps the stomach acidic, and dissolves minerals and micro-organisms. There is also mucus which protects the stomach from damages of acids and the enzymes of the gastric juice by lubricating the food. There are movements that are churning the food and mixing it thoroughly and properly
with the gastric juice. Certain foods stay
in the stomach at certain amounts of time due to chemicals it contains. The stomach does not absorb any nutrients from the food but breaks it down into liquid, chyme. There are two sphincters, one on top of the stomach and one at the end of the stomach.The first sphincter makes sure the entry of food into the stomach is normal. The second monitors the flow of chyme out of the stomach and goes into the small intestine. The chyme leaves the stomach and
heads to the small intestine. The second step, digestion, will be done as the food particles leave the duodenum. The enzymes from the pancreas help breakdown the carbohydrates, proteins and the fat in the chyme. Finally, the bladder produces bile (which is stored in the gall bladder). The bile breaks
down the blobs of fat. This is some "junk" food that causes
diabetes if you eat too much of it. Printed Resources - How it works: page(s) 70-76 - Key Parts: page(s) 71-75 - Possible Problems: page(s) 77 - Cite of Exchange: page(s) 75 - How it works: page(s) 4-6, 18, 19, 22, 23, 25, 46 - Key Parts: page(s) 12, 16, 18, 19, 22, 23, 25, 28,
32, 46 - Possible Problems: page(s) 10, 11, 20, 21, 26, 27,
44, 45 http://www.unique-gift-baskets.net/images/junk-food-gift-basket.jpg sweets basket toilet food chart http://iamadick.squarespace.com/storage/toilet.jpg?__SQUARESPACE_CACHEVERSION=1260894048963 Web Sources (only images) http://www.dairyaustralia.com.au/Health-and-Lifestyle/Dairy-Nutrition/~/media/Images/Supply%20Chain/Health-Nutrition/Nutrition/Final%20Food%20Chart%20Pie%20250.ashx?w=250&h=232&as=1 http://wwwdelivery.superstock.com/WI/223/1828/PreviewComp/SuperStock_1828R-48991.jpg Pizza Kid Digestive system diagram http://upload.wikimedia.org/wikipedia/commons/thumb/e/e0/Digestive_system_diagram_no_labels_arrows.svg/672px-Digestive_system_diagram_no_labels_arrows.svg.png http://socialmediasystems.com/rothmanguide/files/2009/11/837375_mouth.jpg Mouth Salivary Glands liver Pancreas
Gall bladder
Duodenum http://www.pawelmazur.org/blog/wp-content/uploads/2010/07/liver.jpg http://training.seer.cancer.gov/images/anatomy/endocrine/pancreas.jpg intestines stomach
esophagus http://www.nlm.nih.gov/medlineplus/ency/images/ency/fullsize/8756.jpg http://www.beliefnet.com/imgs/tout/story/intestines.gif http://www.nlm.nih.gov/medlineplus/ency/images/ency/fullsize/8686.jpg tongue http://i41.tinypic.com/2hhzzon.jpg BC Science 8 Body focus: The digestive System http://ca.pbsstatic.com/xl/71/8671/9780613608671.jpg The digestive system connects to the
circulatory system. How? The digestive system connects to
the circulatory system by the villi
(singular: villus) that are covered in the small and large intestine. The villi have these capillaries inside. When the villi absorbs the nutrients, the nutrients go into the capillaries. The red blood cells inside carry the nutrients to the circulatory system, where it si delivered to the rest of the body. http://www.ibguides.com/images/biology/intestinal-villus.png villus FOOD The Key Parts Sander, Lionel; Lacy, Donald; Martha, Josef; Milross, James. BC SCIENCE 8. McGraw- Hill Ryerson, Whitby, ON, 2006. Ballard, Carol. The Digestive System: Injury, Illness and Health. Heinemann Library, Chicago, 2003. Article title: The Adventures of Being a Dick copyright: 2006 website: iamadick.squarespace.com website: Unique-Gift-Baskets.net website: website: commons.wikimedia.org website: www.superstock.com website:www.socialmediasystems.com website: www.paperbackswap.com website: www.gaiabook.com website: www.pawelmazur.org/blog website: www.nucleusinc.com Article title: Article title: Nutrition Guidelines Article title: Boy Eating Pizza Article title: Article title: Bc Science 8 copyright: 2010-2011 copyright: 2007-2011 copyright: 2009 copyright: 2004-2011 copyright: 2008 copyright: 2010 Junk Food Gift Basket: A Guilty Pleasure www.dairyaustralia.com.au copyright: 2011 Article title: Salivary Glands Article title: Picture and labelsof the Digestive System Article title: Characteristics of Amazing Domain Names copyright: 2009 Article title: intestines Article title: replacement liver website: blog.beliefnet.com copyright: 2011 website: medlineplus.govt Article title: Framing of MedlinePlus copyright: 2010 copyright: 2010 website: training.seer.cancer.gov Article title: SEER training modules copyright:2000 website: www.ibguides.com/biology Article title: Digestion copyright: 2010 website: www. healthguide.howstuffworks.com Article title: Tongue Image copyright: 2011 Search - Digestive System (Body Focus) Colon cancer Heartburn Indigestion Bulima Nervosa Constipation Diarrhea Article title: Diarrhea copyright: 2011 website: www.healingdaily.com Article title: Herbal Colon Cleansing using psyllium copyright: 20 website: www.healthbeginsinhim.org/Heartburn website: www.fullissue.com Article title: Health Begins In Him copyright: 2000-2010 copyright: 2010 website: www.dietihub.com Article title: Simple Cures for Indigestion website: www.submitproductratings.com website: mickiharjo.blogspot.com Article title: Cancer Ribbon Article title: Anorexia- Bulimia home treatment Program copyright: 2010 copyright: 2011 http://www.healingdaily.com/colon-kidney-detoxification/psyllium-helps-fight-constipation.jpg http://www.fullissue.com/wp-content/uploads/2010/03/diarrhea.gif http://www.submitproductratings.com/wp-content/uploads/2009/03/bulimia.jpg http://1.bp.blogspot.com/_c2XbhNVVPvI/TP04i4Taj3I/AAAAAAAABPE/7xIyc7ZI6qI/s1600/colon_cancer_ribbon.jpg http://www.healthbeginsinhim.org/images/Heartburn.jpg http://www.dietihub.com/wp-content/uploads/2010/03/Indigestion.jpg
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