Circulatory System

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Circulatory System

• Circulation
• Heart structure

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Function To transport materials around the
body Oxygen Carbon dioxide Digested
food Hormones Waste chemicals - urea Heat
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Double Circulation
Left side Oxygenated blood from the lungs
enters the heart and is pumped to the body organs
and tissues
Right side Deoxygenated blood from the body is
returned to the heart to be pumped to the lungs
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Pulmonary system up to the lungs
CARBON DIOXIDE
OXYGEN
Systemic to the organs of the body
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Structure of the heart
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You need to be able to label all parts of the
heart
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Blood from ?
Blood from lungs
?
right atrium
valve
Left ventricle has a thicker muscle wall than
right side why?
Right ventricle
LEFT SIDE
RIGHT SIDE
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Body organs
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Blood to the ?
Blood to the ?
Blood from ?
Blood from lungs
Left atrium
right atrium
valve
Left ventricle
Right ventricle
LEFT SIDE
RIGHT SIDE
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Beating heart blood flow
The valves prevent the backflow of blood.
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How do the valves work? How many can you see?
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out
in
in
Can you see the 4 valves?
Atrium and ventricle muscles force the blood
through and out of the heart
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VALVE between the atrium and ventricle
Ventricle wall
Ventricle chamber
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The end