Transcript The structure of the heart

Loughborough
College
The structure of the heart
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21-Jul-15
1
The structure of the heart
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Click on the
different
regions of the
heart.
21-Jul-15
2
Right Atrium
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• Blood is brought back to
the heart via the veins,
where it arrives at the
right atrium.
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3
Right Ventricle
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• Blood is pumped from
the right ventricle to the
lungs to be oxygenated.
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4
Left Atrium
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• Oxygenated blood that is
returning from the lungs,
arrive at the Left Atrium
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5
Left Ventricle
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• Blood is pumped from
the Left Ventricle around
the body.
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6
Aorta
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• The blood leaves the left
ventricle via the Aorta.
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7
Pulmonary Artery
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• Blood leaves the left
ventricle via the
pulmonary artery. This
is the only artery in the
body that carries
deoxygenated blood.
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8
Pulmonary Valve
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• This Semi-lunar (half
moon) valve, stops
blood that is being
pumped to the lungs
flowing back into the
heart.
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9
Tricuspid Valve
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• The Tricuspid valve has
3 cups. As the Right
Ventricle contracts, this
valve closes to prevent
the blood being pumped
into the atrium, instead
the blood goes into the
pulmonary artery.
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10
Septum
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• The Septum keeps the 2
sides of the heart
separate from each
other.
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11
Dicuspid Valve
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• The Dicuspid valve has
2 cups. As the Left
Ventricle contracts, this
valve closes to prevent
the blood being pumped
into the atrium, instead
the blood goes into the
Aorta.
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12
Chordinae Tendinae
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• These strong fibres
prevent the valve from
opening under the
considerable pressure
that the ventricle exerts.
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13