The Structure of the Heart

1
The Structure of the Heart

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2
The Structure of the Heart
Click on the different regions of the heart.
3
Right Atrium

• Blood is brought back to the heart via the veins,
  where it arrives at the Right Atrium.

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4
Right Ventricle

• Blood is pumped from the Right Ventricle to the
  lungs to be oxygenated.

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5
Left Atrium

• Oxygenated blood that is returning from the lungs
  arrives at the Left Atrium

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6
Left Ventricle

• Blood is pumped from the Left Ventricle around
  the body.

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7
Aorta

• Blood leaves the left ventricle via the Aorta.

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8
Pulmonary Artery

• 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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9
Pulmonary Valve

• This semi-lunar (half moon) valve stops blood
  that is being pumped to the lungs flowing back
  into the heart.

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10
Tricuspid Valve

• 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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11
Septum

• The Septum keeps the 2 sides of the heart
  separate from each other.

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12
Dicuspid Valve

• 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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13
Chordinae Tendinae

• These strong fibres prevent the valve from
  opening under the considerable pressure that the
  ventricle exerts.

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