The Digestive System
By: Dylan, Kohl, Raigen, Angelina,
and Victoria
The Teeth
• The teeth is a mechanical digestion that breaking
down the food by chewing and then it turns into
food particles.
The Mouth
• The mouth opens and closes and is also a
mechanical digetion.
The Tongue
• The tongue plays a role I mechanical digestion
because the tongue moves the food around so it
is easier.
The Salivary Glands
• The salivary glands is what makes the saliva and
the saliva make your mouth not turn dry.
Epiglottis
• As you swallow, a flap of skin called the
epiglottis moves across your wind pipe and food
is funneled into the esophagus.
The Esophagus
• The esophagus is a tube that comes from the
back of your mouth, down your throat, and all
the way down to your stomach.
The Peristalsis
• The peristalsis is what squeezes the food down
the throat.
o There are two types of digestion- Mechanical Digestion, and Chemical
Digestion.
o Mechanical Digestion happens when you chew the food and then it breaks
it down to small food particles.
o Chemical Digestion breaks down large food particles into smaller particles
called Enzymes.
o Enzymes are substances that bring about a specific biochemical reaction.
• As food reaches the large intestine, mechanical and
chemical digestion are complete.
• The large intestine is about 1.5m long (in humans).
• The food particles that have not been digested yet are
created into feces, which is collected in the rectum.
• When the food is not digested, it turns to waste.
(POOP)
• The gall bladder produces bile.
• Bile is a substance that breaks up fat particles.
https://www.youtube.com/watch?v=VwrsL-lCZYo
The stomach
How does the stomach work
• The stomach responds the stimulus in different
way.
• It breaks down food using gastric juices. Gastric
juices is composed mucus, hydrochloric acid,
water, and digestive enzymes
• It chemically digests food into smaller particles.
• The stomach slowly releases food which is now
liquid into small intestine
Stomach diseases
• Gastric Cancer- Gastric Cancer is cancer that starts
in the stomach. Most common cancer is the world
• Gastritis – When the stomach lining becomes
inflamed or swollen
• Gastroparesis- Where the stomach is unable to
empty its contents
• Non-Ulcer Dyspepsia- Where they suffer from
indigestion but no ulcer is there
• Peptic Ulcers-Break in the surface of the stomach
lining deep enough to produce a crater like wall
Small intestine how does it work
• When food moves into the small intestine
the chemical digestion continues. The
pancreas sends digestive enzymes into the
small intestine. It will complete the process
of breakdown of food of starches and
proteins.
Small intestine diseases
• Crohn disease- It disturbs the function of
bladder/bowel movement with swelling, scars
and ulcers.
• Small intestine Cancer- Its cancer on your small
intestine
Liver disease's
• Our liver plays a very important role in our body functions such as protein
production and blood clotting, cholesterol, glucose and iron metabolism.
• There is many other illnesses that can affect the liver.
• Cirrhosis occurs when our normal liver cells are replaced by scar tissue as a
result of chronic liver disease, Cirrhosis also will block blood flow through the
liver.
• The symptoms of liver disease’s are weight loss, vomiting, weakness, nausea,
and yellowing skin.
• The treatment for the particular liver disease depends on the specific disease.
What does your liver do for you?
• Your liver cleans your blood, by helping take toxins/poisons out
of your blood.
• The liver also cleans blood that has just been enriched with
vitamins and minerals during digestion.
• After you eat, the vitamins, minerals, and other nutrients from
the food pass from the intestine into the blood. Before going out
to the rest of the body, the nutrient-rich blood makes a stop at
the liver.
FOOD’S PATH THROUGH THE
DIGESTIVE SYSTEM
The digestive system is
made up of a number of
organs. The beginning is at
your mouth and the end is
at the rectum.
Any food that you take a
bite of starts and ends this
journey in your digestive
system. You can choose
any foods to eat but it is
best to pick healthy,
nutritious items which
include a balance of
proteins, starches, fats,
minerals and vitamins.