Transcript The Digestive System

The Digestive System
By Sofia
Where does the food digestion
begin????
• Digestion, the breaking down of food into
small molecules that will be absorbed into
our bloodstream begins when you put food
in your mouth and begin to chew.
• Your teeth help to break the food apart,
saliva helps to soften the food and your
tongue helps to push the food into your
throat when your ready to swallow.
Lets Say…
• Let’s say you eat a hamburger and milk for
lunch.
• What happens to that hamburger?
• Once that hamburger gets into your mouth
it gets chewed up into tiny pieces.
• The Mouth Starts Everything Moving
First Step
• Your teeth are very important
• Your digestive system will work for the
next few hours breaking up that
hamburger into nutrients that your body
can use.
• First the hamburger will be made into
smaller pieces by chewing with your teeth
Saliva
• You know when your about to have dinner
and you smell that wonderful smell. Your
stomach growls and saliva in your mouth
that’s digestion starting.
• When you eat, the saliva breaks down the
chemicals in the food, which helps make
the food mushy. Your tongue helps
pushing the food around while you chew
with your teeth.
Journey to the bottom of the throat
• How does that Hamburger get to your
Stomach??
• Well it has to go through something
• It goes down your throat!!!!!
• How does it get down???
• There are muscles in your throat that push
the hamburger down
The Stomach
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The stomach physically moves
The stomach also squirts acid
The stomach is like a balloon
It shrinks when empty and grows when full
The stomach mixes food before going on
to the rest of the body
• The stomach is about 12 inches long and
is 6 inches wide at its widest point.
Small Intestine
• It is more than 6 meters long
• It has three sections, the duodenum,
jejunum and ileum
• The jejunum is the 1-2 m long, coiled midsection
• The ileum is the final portion of the small
intestine, which leads into the large
intestine.
Large Intestine
• The large intestine turns the food you don’t
need into stool
• The large intestine is about 1.5 m long
• The large intestine reabsorbs water and
maintains the fluid balance of the body,
absorbs certain vitamins, processes
undigested material, stores waste before it
is thrown away
Diverticular
• Diverticular disease is common among the
older people.
• Diverticulitis are pea-shaped pouches that
forms in the colon wall.
• Diverticular disease is common among the
older people. Estimates are that 30 to 40
percent of North Americans over age 60
have this problem.
Leaky Gut Syndrome
• Leaky gut syndrome is the name given for the
condition that allows larger food particles to pass
through the gut wall.
• Ordinarily, only properly digested food goes
through the intestinal wall.
• When this wall is damaged, larger particles,
such as partially digested food and toxins, pass
through.
• The body does not recognize them and
activates the immune system to search and
destroy. The result is inflammation.
Ulcerative Colitis
• Ulcerative colitis is a disease that causes
inflammation and sores, called ulcers, in
the lining of the rectum and colon.
• Ulcers form where inflammation has killed
the cells that usually line the colon, then
bleed and produce pus
• Inflammation in the colon also causes the
colon to empty frequently, causing
diarrhea.
Facts
• Digestive problems are the No. 1 problem
in North America.
• An adult esophagus ranges from 10 to 14
inches in length, and 1 inch in diameter
• We make 1 to 3 pints of saliva a day
• The stomach's wall is lined with three
layers of powerful muscles
• In the mouth, food is either cooled or
warmed to a more suitable temperature
Pictures