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GCSE Biology Paper 1 (9-1 Exams)

Blood Atria Flows Pulmonary Contract Ventricles State Pathway

Blood enters the atria from the vena cava and pulmonary vein, moves to the ventricles which contract to pump it into the pulmonary artery and aorta, and eventually returns to the heart.

Le sang entre dans les deux oreillettes depuis la veine cave et la veine pulmonaire, puis passe dans les ventricules qui se contractent pour expulser le sang dans l'artère pulmonaire et l'aorte, avant de retourner au cœur.

Front State the pathway of blood flow through the heart.
Back
  1. Blood flows into the two atria from the vena cava and the pulmonary vein
  2. The atria contract, pushing the blood into the ventricles
  3. The ventricles contract, forcing the blood into the pulmonary artery and the aorta, and out of the heart
  4. The blood then flows to the organs through arteries, and returns through veins
  5. The atria fill again and the whole cycle starts over

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