The Digestive
System
By: Jess Sequeira, Jordan OrtizPallen, Toni Gadar, Emily Brazis,
and Mayreni Sweis
Everyone
What is the digestive system?

The system that breaks down food so that
it can be used by the body

One of the nine major organ systems in
the body

Includes mouth, esophagus, stomach,
small and large intestines, rectum and
anus
Jordan
Why is the digestive system
important?

Changes food into nutrients

Absorbs and transports nutrients

Removes food wastes from the body
Jordan
What you’ll learn about the
digestive system.
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
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Mechanical vs. chemical digestion
Organs of the digestive system
What happens in each organ
How homeostasis is maintained in the
digestive system
Role of bacteria in the digestive system
Emily
Picture of the digestive
system
http://www.carlson-art.com/lifescience/digestive-system-lg.jpg
Mayreni
Digestive System Failures



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

Loss of teeth
Scleroderma of the esophagus
Stomach cancer
Gallstones
Pancreatic cancer
Colon cancer
Jess
The parts of the digestion
system
http://www.google.com/images?um=1&hl=en&client=firefox-a&rls=org.mozilla%3AenMayreni
US%3Aofficial&tbs=isch%3A1&sa=1&q=digestive+system&aq=f&aqi=g10&aql=&oq=&gs_rfai=
Picture of the small intestine
http://www.colorado.edu/intphys/Class/IPHY3430Mayreni
200/image/21-2d.jpg
Digestive System Vocabulary

Digestion: mechanical and chemical
processes that breaks down food into
smaller molecules so they can be used in
the body’s cells

Enzyme: molecules that speed up the rate
of chemical reactions in the body
Toni
Digestive System Vocabulary
(Continued)

Mechanical digestion: process that occurs
when food is chewed in the mouth and
churned in the stomach

Chemical digestion: process that breaks
down food into different smaller molecules
so it can be absorbed by the body’s cells;
takes place in the mouth, stomach, and
small intestine
Toni
Digestive System Vocabulary
(Continued)


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Saliva: watery enzyme containing fluid in the
mouth that is mixed during digestion
Peristalsis: wavelike muscular contractions that
move food through the digestive system
Chyme: thin, watery product that is the result of
digestion
Villi: fingerlike projections in the small intestine
where nutrients are absorbed into the blood
stream
Toni
Test Questions
1. Compare mechanical and chemical
digestion.
2. Where does most digestion occur?
3. What product is made by bacteria in the
large intestine?
Everyone
Test Questions
(Continued)
4. What continues to force the remaining
materials that haven’t been digested or
absorbed slowly into the large intestine?
5. Food is processed in your digestive
system for the purpose of supplying your
body with raw materials for _________.
Everyone
Test Answers
1. Mechanical digestion is a process that
occurs when food is chewed in the
mouth and churned in the stomach.
Chemical digestion is a process that
breaks down food into separate, smaller
molecules so they can be absorbed into
the body’s cells.
2. Most digestion occurs in the duodenum.
Everyone
Test Answers
(Continued)
3. Essential vitamins are produced in the
large intestine.
4. Peristalsis pushes the remaining material
into the large intestine.
5. metabolism
Everyone
Fun facts

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Digestive juices mix with food.
Breaking large molecules to small
molecules.
Begins in mouth.
Ends in small intestine.
Enzymes in the digestion system
Made up of digestive track
Mayreni
Fun facts
(Continued)

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Inside of hollow organs, is a special lining
called the mucosa
Digestive track also contains a layer of
smooth muscle that helps break down
food, and helps it to move down tract
Mayreni
Thanks for listening
to our presentation!
Researched by: Emily, Toni,
Jordan, Jess, and Mayreni
Edited by: Jess Sequeira
Jess