The digestive system how it works _ Hệ tiêu hóa

The Digestive System: How it Works
The digestive system is designed to convert the food we eat into nutrients
which is used by the body for energy, repairing worn out cells and growth.

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The Digestive System: How it Works
Mouth

Digestive
system

Food is chewed in the mouth with the
Food
fromThis
thereduces
mouthfood
to into
the
help ofmoves
the teeth.
Throat
throat
pharynx)
and further
to the
smaller (or
particles
and during
the process

it
esophagus.
is mixed with saliva. Saliva also contains
Esophagus
The
esophagus is aamylase,
muscular which
tube
a digestive enzyme,
extending
the throat
the stomach.
Stomach
works
on from
breaking
downtohollow
carbohydrate
The
stomach
is a sac-like
organ
The
lower
esophageal
sphincter
is or
a
into starch.
like bread,

potatoes,
with
strongFood
muscular
walls.
It holds
Small
valve
right
wherecarbohydrates.
the esophagus meets
pasta,but
are rich
food
also inserves
as a mixer and
intestine
the
stomach.
It
prevents
backward
The
small
is the
asecrets
long
tube
grinder.
The intestine

stomach also
acid
movement
of
food.
• Pancreas
loosely
coiled inthat
the abdomen (it
is more
and enzymes
further breakdown
• Liver
than
long).pepsin is
It is constituted
of
food. 20
Thefeet
enzyme
responsible
• Gall
three
segments,
the duodenum,
jejunum,
for protein
breakdown.
This combined
bladder

and
It food
continues
actionileum.
renders
leavingthe
the digestion
stomach
Colon
It isenzymes
is a 5-released
to 6-foot-long
process
using
by the
liquid or-paste.
Colon (Large
muscular
tube.bile
It from
is made
of The
the
pancreas and
the up
liver.
Intestine)
cecum,
the ascending
the

duodenum
continues (right)
the colon,
digestive
The
anuswhile
is(across)
the the
lastcolon,
part of
digestive
transverse
thethe
descending
process
jejunum
and
ileum
Rectum
The
rectum
(Latin
for
"straight")
is
an
8tract.
Itminerals.
consists
of the colon .

pelvic Stool,
floor
(left)
colon,
and theEnzymes
sigmoid
absorb
secreted
by
inch chamber
that
connects
the colon to
muscles
and
the
two
Anus
or
waste
leftbreak
overdown
fromanal
the sphincters
digestive
the
pancreas
protein,
fat,from
and

the anus.
The
rectum
receives
stool
which
regulate
when
andBacteria
how to go
to the
process
is stored
found
in
carbohydrates.
  here.
the
colon
and
holds
it
until
evacuation.
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toilet
to evacuate
stool or
gas.
the stool

also synthesis
vitamins.


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