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Have you ever looked in the mirror and wondered what’s underneath your skin? It’s your organs! Your skin, your heart, your brain, your lungs and many other
things are all organs.
This picture shows the
main organs of your body. Let’s see if you know
what they are called.
brain
lungsheart
liver stomach
small intestine
large intestine
skinLet’s have a
look at them in more detail.
Your brain is about the size of a small cauliflower. It sends messages to the rest of your body using the spinal cord. It is a bit like your body’s own
control centre!
Your brain is protected by your skull and is
surrounded by fluid to cushion it if you fall
over.
Your brain needs oxygen from blood to work properly.
3,500 pints of blood flow through the brain every day!
The brain has two sides that control different things in our body.
The right side of
the brain is the
creative
side.
The left side of
the brain is the logical
side.
There are areas of the brain that help with all of our senses, our behaviour, our
speech, our memory and our movements.
Your body needs oxygen to stay alive. When you
breathe in, oxygen enters your lungs. The
oxygen goes into your bloodstream
through your lungs and is
carried to the parts of the body
that need it.
Your lungs take up most of the space in
your chest.
They are protected by your ribcage.
Your left lung is smaller than your right lung so that there is enough space for your
heart.
Your lungs allow you to take in fresh
air and get rid of stale air.
Your heart is like a pump but it is really a muscle. It's located a little to the left of the
middle of your chest, and it's about the size of your fist.
The heart sends blood around your body. The
blood provides your body with the oxygen and nutrients it needs.
The right side of your heart receives
blood from the body and pumps it
to the lungs.
The left side of the heart does the
exact opposite: It receives blood
from the lungs and pumps it out to the
body.
The liver is the largest organ inside your
body.
The liver helps the body store energy
and gets rid of toxins.
When you are fully grown your liver will
weigh 1.5 kilograms, but by the time you are 60 years old it will have
shrunk to 0.8 kilograms! Don’t worry – it will still
do its job!
When you eat food passes into your stomach and
stays there for two-and-a-half to three hours.
Your stomach muscles squash the food until it is a creamy pulp.
Your stomach produces juices to
break down the food and kill germs you
may have swallowed.
Your intestines are in two parts.
The small intestine
The large intestine
Your small intestine is a narrow coiled tube that is about 6 or 7 metres long. When food leaves your stomach it comes
here so that nutrients can be absorbed
back into the body.Water and food that
cannot be digested pass into your large intestine and come out of your
body as waste.
Your skin is the body’s biggest
organ!
Your skin is very
important. It covers and
protects everything inside your
body.
Skin: protects our bodies
helps keep our bodies at just the right temperature
allows us to have the sense
of touch
The skin is tough and strong, just right for
covering your body and protecting it. Skin is
always renewing itself . Though you can't see it
happening, every minute of the day we lose about 30,000 to 40,000 dead
skin cells off the surface of our skin.
Our diagram looked showed only some of the organs in our body. There are
many others, too many for us to look at now. Let’s just look at a couple more
that are important.
The kidneys are every bit as important as the
heart. You need at least one kidney to live!
Kidneys come in pairs. If you've ever seen a kidney bean,
then you have a pretty good idea what the kidneys
look like. Each kidney 13
centimeters long and about 8
centimeters wide - about the size of a
computer mouse.
One of the main jobs of the kidneys is to filter the
waste out of the blood. Most of the waste is just stuff your body doesn't need because it already has enough. The waste
has to go somewhere; this is where the kidneys come
in. The waste that is collected combines with
water (which is also filtered out of the kidneys) to make urine. This travels
to the bladder.
The bladder
The bladder is a bag that collects the urine that leaves the
kidneys. When your bladder is about half full it sends message to your brain and you go to
the toilet.Drinking plenty of water and avoiding rich food
helps keep your bladder and kidneys in good
condition.
I hope you have enjoyed looking at some of your body’s organs. Let’s see how many
you remember.brain
liver
lungsheart
stomach
large intestinesmall intestine
skin
kidneys
bladder
Produced by
Bev Evans
2006