THE CIRCULATORY SYSTEM Emily Templeton Home Next Slide Previous Slide End Presentation Start the Quiz NICE TO MEET YOU Hello! My name is Dr.T! I am a body systems specialist! I will be helping you learn.

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THE
CIRCULATORY
SYSTEM
Emily Templeton
Home
Next
Slide
Previous
Slide
End
Presentation
Start the
Quiz
NICE TO MEET YOU
Hello! My name is Dr.T! I am a
body systems specialist! I will be
helping you learn all about the
circulatory system! I will be
sharing my thoughts on every
page, so be on a lookout for
them! I hope you’re ready, you’ll
be a specialist too before you
even know it!
Before I forget, be sure
to use the navigation
buttons if you need
them! They can help you
move throughout the
lesson!
THE CIRCULATORY SYSTEM
Blood Vessels
The main organ
for this body
system is the
heart.
Heart
Blood
THE CIRCULATORY SYSTEM
 The circulatory system is a system that works to
bring oxygen and nutrients to body cells and
takes away carbon dioxide and wastes.
 At the center of the circulatory system is the
heart!
The C.S.
keeps your
blood
moving!
THE HEART
 The heart pumps blood through your blood




vessels to all parts of your body.
The heart is strong and works all the time!
The heart is divided into 4 chambers.
The two upper chambers are called the left
atrium and right atrium. They bring blood from
the veins.
The lower chambers are called the left and right
ventricle. They pump blood to the body.
The atriums are
at the top of
the heart, think
Atriums/ Attic!
THE HEART
This is what
your heart
really looks
like!
THE HEART
 The heart is a powerful muscle in your chest. It is
about the size of your fist.
 The heart muscle is different that other muscles
,because it never gets tired.
Who would
have thought
your heart
was that
strong?
HEART VALVES
 The heart has heart valves that open in one
direction.
 This keeps the blood that is carrying fresh oxygen
into the body from mixing with the blood
carrying carbon dioxide.
Heart valves are kind
of like traffic
controllers. They
make sure everything
keeps moving in the
right direction.
HEART VALVES
 The heart pumps blood through your body to
deliver oxygen and take away wastes like carbon
dioxide.
 While this is going on, the right atrium also fills
with blood that has been through the body and is
filled with wastes like carbon dioxide. It needs to
go to the lungs.
Heart valves
have a very
important job
pumping blood.
BASICS ABOUT BLOOD
 Blood is made up of several parts
 The liquid part is called the plasma.
 Red blood cells carry oxygen and carbon dioxide
through the body.
 White blood cells help the body to fight germs.
 Platelets help the blood to form clots and heal
cuts.
The reason blood is red is
because it's got iron in it. If
you look down a
microscope at blood, what
you'll see are thousands of
tiny little red cells that are
referred to as bi-concave
discs.
BLOOD
 Blood travels through the body through blood
vessels
 There are 3 main types of blood vessels
 An artery is a blood vessel that carries blood
away from the heart. Arteries are the largest
blood vessels in the body.
 The smallest blood vessels are called capillaries.
They are so small that only one cell can pass
through at a time.
 Veins are the other types of blood vessels. They
carry blood to the heart.
Did you know
your blood
looks blue
sometimes?
TO SUM IT UP…
 The right ventricle’s blood without oxygen goes
to the lungs.
 The left ventricle with fresh blood is ready to go
through the body.
 YOUR BLOOD CIRCULATES THROUGH YOUR
BODY IN ONE MINUTE!!!!!
The circulatory
system keeps you
alive and is
constantly
working!
LET’S SEE WHAT YOU REMEMBER!
What is the main organ of the circulatory system?
 Heart
 Lungs
 Stomach
 Blood
 Skull
You’re so
smart, the
heart!
Keep it up!
LET’S SEE WHAT YOU REMEMBER!
What take the blood away from the heart?
 Atrium
 Arteries
 Veins
You guessed it,
the arteries!
Awesome job!
LET’S SEE WHAT YOU REMEMBER!
How many chambers is the heart made up of?
5
3
4
2
That’s right,
4!
Way to go!
EXTRA PRACTICE
http://kidshealth.org/PageManager.jsp?lic=1&article_s
et=59357&cat_id=20607
Need some
extra practice?
Try this quiz!
RESOURCES
 OGCE Heart PPT
 4th Grade Science Book
 http://kidshealth.org/kid/htbw/heart.html
 http://kids.discovery.com/tell-me/science/body-
systems/your-cardiovascular-system
 Images Microsoft ClipArt

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