Why Is
Digestion
Important?
Role playing
• Role-playing as your favorite food
• The goal of the journey is to explore how the food is processed in the
body through the digestive system.
• Rename your zoom by “your favorite food_nickname“
what we should
prepare before
taking a road trip so
as not to get lost?
Digestive
process
of turning your
Roadmap
Mouth
Esophagus
Stomatch
Rectum
Large
intestine
Small
intestine
food into
nutrients
Process
ofthe
turning
your
and
younutrients
need to
food energy
into the
survive.
and energy
you need to
survive.
packages your solid
waste, or stool, for
Packages when
youryou have
solid
disposal
waste, or stool, for
a bowel movement
disposal when you need
to go to bathroom
Anus
Mouth
Physical degestion
Teeth bites, chews, and grinds food
into something we can swallow
Chemical degestion
Salivary glands adds saliva to begin
the digestive process of carbohydrate
and fat.
Then, the tongue pushes food around
as we chew and sends food down to
the esophagus.
The mass of chewed up food is called
bolus.
Esophagus
• Receives food from mouth
• Epiglottis is a small flap that
folds over your windpipe as
you swallow to prevent you
from choking
• A series of muscular
constractions within the
esophagus called peristalsis
delivers food to your stomach
The stomach is a muscular sac that
actually chums, mashes and adds spesial
chemicals, or gastric juices, to the bolus.
gastric juice containing pepsin, for
chemical digestion of protein; also
hydrochloric acid to kill bacteria
Stomach
Bolus moves in perstalsis and is broken
down some more into a thick liquid
known as chyme.
A the chyme flows through the small intestine
by peristalsis, it is further broken down into
smaller nurtional parts.
The vitamin, minerals, protein, carbohydrates,
fats, water, and salts from the food pass through
hair like projections all along the interior lining
of the small intestine called villi.
Perstalsis also works in this organ, moving food
through and mixing it with digestive juice from
the pancreaas and liver.
Small
intestine
Liver and gallbladder
At the top of small intestine is a duct
or tube that allows a chemical known
as bile to be added to the material in
the small intestine. This bile was
created in the liver, stored in the
gall bladder until it is needed and
the passed off to the small intestine
for the purpose of digesting fat.
Pancreas
secretes pancreatic juice into the
duodenum via pancreatic duct for
chemical digestion of proteins, fats
and starch
Helping Organ
Large intestine
•
•
•
colon first part of the large intestine;
absorption of water from undigested food;
absorption of bile salts to pass back to the
liver
Stool or waste left over from the degistive
process, is passed through the colon by
means of peristalsis
Good
bacteria
synthesizes
various
vitamins process waste products and food
particles, and protects against harmful
bacteria
rectum
•
•
•
Connects the colon to the
anus
It‘s job is to receive stool from
the colon, let you know that
there is stool to be evacuated
(pooped out) and hold the
stool
until
evacuation
happens.
When anything (gas or stool)
comes into the rectum,
sensors send a message ti the
brain
•
•
•
•
Last part of the degistive tract,
has pelvic floor muscles and two
anal sphincters (internal and
external)
Pelvic floor muscles :detect rectal
contents (solid, liquid or gas)
Internal sphincter :involuntary,
pervents us from excreting
involuntarily
Exteranal sphincter : voluntary,
holds stool until ready and relaxes
for defectaions
Anus
How Do You Keep
Your Digestive
System Healthy?
Way To a Healthy Digestive
System
• Follow a regular eating schedule
• Drink plenty of water
• Minimize your intake of foods
high in fat
• Be sure you’re getting both
soluble and insoluble fiber.
• Exercise regularly
Let’s review our lesson today
Choose the function
Chewing takes place and activation
of salivary enzymes
Breaks down food using enzymes
released by the pancreas and bile
from the liver
Secrets bile into the small intestine
which digest fat and some vitamins
A. Chewing takes place and activation of salivary
enzymes
Choose the function
Chewing takes place and activation
of salivary enzymes
Breaks down food using enzymes
released by the pancreas and bile
from the liver
Secrets bile into the small intestine
which digest fat and some vitamins
C. Secrets bile into the small intestine which digest
fat and some vitamins
Choose the function
Last part of the GIT which secretes
waste
Receives food from the mouth
when you swallow and brings it to
the stomach
Holds food while it is being mixed
with stomatch enyzmes and its
lining cells secrete a strong acid
that are responsible for the
breakdown process
C. Holds food while it is being mixed with stomach
enzymes and its lining cells secrete a strong acid
that are responsible for the breakdown process
Choose the function
Secrets bile into the small intestine
which digest fat and some vitamins
Breaks down food using enzymes
released by the pancreas and bile
from the liver
responsible for processing waste
and absorbing water so that
emptying the bowels is easy and
convenient
A. Secrets bile into the small intestine which digest
fat and some vitamins
Choose the function
Receives food from the mouth
when you swallow and brings it to
the stomach
responsible for processing waste
and absorbing water so that
emptying the bowels is easy and
convenient
Breaks down food using enzymes
released by the pancreas and bile
from the liver
B. responsible for processing waste and absorbing
water so that emptying the bowels is easy and
convenient
Choose the function
Cheewing takes place and
activation of salivary enzymes
Breaks down food using enzymes
released by the pancreas and bile
from the liver
Secrets bile into the small
instestine which digest fat and
some vitamins
B. Breaks down food using enzymes released by
the pancreas and bile from the liver
What Have
You Learned
Today?
Whatever your favorite food is- your digestive
system turns the food into usable energy
inside your body. The food contains nutrients
such as carbohydrate, proteins, vitamins,
minerals, fats, fibers, salts and water. It is
through digestion that these nutriens are
broken down, absorbes and used by our
bodies. This keep us healty and gives us the
energy we need to do all we do during a day a
like run, play, work and even eat again
Thank you
and see you
next, kids