Biology | "What's In Our Digestive System?" Explained | Human Body | Science for Kids
Published May 23, 2023, 9:20 p.m. by Naomi Charles
What's in our digestive system?
The human digestive system is a long, tube-like organ that starts at the mouth and ends at the anus. In between, there are a number of important organs, including the esophagus, stomach, small intestine, and large intestine. Each of these organs has a specific job to do in the digestive process.
The mouth is the first stop in the digestive system. Here, food is chewed and mixed with saliva, which contains enzymes that begin to break down the food. The chewed food then travels down the esophagus to the stomach.
The stomach is a muscular sac that stores food and begins the process of digestion. Digestion is when the food is broken down into small pieces so that the body can absorb the nutrients. The stomach also mixes the food with acids and enzymes.
After the stomach, food enters the small intestine. The small intestine is about 20 feet long and is where most of the digestion and absorption of nutrients takes place. The small intestine is divided into three sections: the duodenum, jejunum, and ileum.
The large intestine is the last stop in the digestive system. The large intestine is about 5 feet long and is where water and electrolytes are absorbed. The large intestine also contains bacteria that help break down food.
The digestive system is a complex and important part of the human body. It is responsible for breaking down food, absorbing nutrients, and eliminating waste.
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how is poop made
let's check out michael's digestive
system and see what's wrong first off
the mouth
ah
all this chewing is making me dizzy
chewing is a very important step in food
digestion bobo look at how michael's
teeth are crushing the biscuit and it is
much smaller than it was
after the food is broken down into
smaller pieces
the ball of food can easily travel down
the esophagus to our stomach
this first step of food processing which
we swallow food and drinks is called
ingestion
the transparent liquid is called saliva
it helps wet our food so that it's
easier to swallow we are going to be
traveling down the esophagus and get
into the stomach hang on tight whoa
that felt like being squeezed out from a
toothpaste
yes bobo the esophagus got muscles that
contract involuntarily to push the foot
down it also connects our mouth to the
next location the stomach
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oh no
more shaking
yes the stomach muscles contract
and turn the food into even smaller
pieces
but not only that
look at the biscuit bobo
it looks like it's dissolving what's
happening
our stomach contains hydrochloric acid
an extremely strong acid that breaks
down food chemically and kills most of
the germs that may be present in our
food the second step of food processing
in which we break down food into smaller
pieces is called digestion
whoa
what are those nixon
they look like fingers
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yes bobo
we are now in a small intestine
and those finger-like projections are
called v-line
the main role of the small intestine is
to absorb the nutrients from our food
that are digested by the enzymes in our
saliva
and the stomach just before
the third step of food processing is
called absorption hold on a second
how long have we been in the small
intestine form
i thought it was meant to be the small
intestine
yes bobo the small intestine is super
long
it's around 7 meter long and is looped
and packed in a very confined space
look we're almost at the end
there's nothing wrong with michael's
small intestine
let's get to the next stop the large
intestine
whoa
the large intestine is a lot wider than
the small intestine great observation
bobo
the large intestine mainly absorb excess
water and produce poop
what's in the poop and why is it so
stinky
poop is mostly undigested food bacteria
and other substances that are released
by the intestines
usually it is the bacteria in the poop
that makes it smelly
an important way to ensure your
digestive system stays healthy is by
drinking plenty of water if you don't
drink enough water it will be much
harder to get your poop out and then we
poop
not yet bobo
the poop is stored in the lower end of
the large intestine called the rectum
look at how the excess water is absorbed
from the biscuit
and it is now ready to be adjusted from
the body
the final step of foot processing which
we excrete poop from our body is called
elimination
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