Transcript The Circulatory System

The Circulatory System
Warm Up
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Write down three things you can do to
keep your heart healthy
The Circulatory System
This system carries
food and oxygen to
all the cells of the
body.
 It is made up of the
heart, blood & blood
vessels.
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The Circulatory has 2 big jobs
Big job # 1 – Carrying Food, Water, &
Oxygen.
 The circulatory system was the awesome
task of delivering the necessary “goods”
the cells. It’s a bit like the pizza delivery
person.
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Big Job #2 -Removing Wastes from
the cells.
 In our everyday activities we create
waste. The wastes cannot stay in the cells.
They would build up and prevent the cells
from doing their job.
 The circulatory system carries the waste
to other parts of the body where they are
removed from the body
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The Heart
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The heart is a muscle and
its job is to pump blood
to all of the cells in your
body.
The heart is the strongest
muscle in the human
body
It pumps the blood to
your brain cells, nerves,
and bone cells.
It pumps 24 hours a day
without a break.
FACTS ABOUT HEART
The Heart is about the size of your fist and is
located in the middle of your chest, slightly to
left.
 Its upper chambers are the right atrium and left
atrium. The lower chambers are the right
ventricle and the left ventricle.
 Arteries pump oxygenated blood to your body;
away from heart
 Veins carry deoxygenated blood back to the
heart and then to the lungs.
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Terms
Red Blood Cells- Carry
oxygen & carbon
dioxide to & from the
lungs. Produced in
the bone marrow.
 White Blood CellsDestroy bacteria and
are produced in the
spleen.
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Terms
Blood Platelets- Aid blood in clotting to
help stop bleeding.
 Plasma- Liquid part of blood. About 90%
water
 Blood is made up of 45% cells and 55%
plasma
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REVIEW
How is the circulatory system similar to a
paper boy?
 How big is your heart and were is it
located?
 What blood vessels carries blood to your
cells, away from your heart?
 What blood vessels carries blood back to
your heart?
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Review continued…
Aid in blood clotting?
 Which blood cells carry oxygen and carbon
dioxide to and from the lungs?
 Which blood cells destroy bacteria and
where are these cells produced?
 What is the liquid part of blood called?
 Name 3 parts of the circulatory system.
 Name 3 blood vessels.
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Capillaries
 Capillaries
are extremely small
vessels located within the tissues of
the body that transport blood from
the arteries to the veins.
FLOW OF BLOOD THROUGH THE
HEART
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Superior Vena Cava (vein) = carries blood to
heart
Right atrium (deoxygenated)
Right ventricle (deoxygenated)
Pulmonary artery
Pulmonary vein
Left atrium (oxygenated)
Left ventricle (oxygenated)
Aorta (artery) = carries blood away to body