The Heart IGCSE Biology

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Across
  1. 3. The name of the valves between the atria and the ventricles.
  2. 6. When we cut a living organism or organ up to investigate what it looks like.
  3. 10. The name of the side of the heart on the right side of a diagram.
  4. 12. Artery that supplies blood to the kidney.
  5. 13. Two words. A low pressure circulation to the lungs and a high pressure circulation to the body tissues.
  6. 17. This is red fluid that flows in our arteries and veins and carries oxygen and glucose to where it is needed for respiration.
  7. 18. This is the name for the two larger chambers at the bottom of the heart that pump blood to the lungs and to the body.
  8. 19. The name of the two smaller chambers (plural) at the top of the heart that blood flows into.
Down
  1. 1. There are 4 of these in the heart and they stop blood from flowing back the wrong way.
  2. 2. Two words. The vein coming back from the lungs that carries oxygenated blood into the left atrium.
  3. 4. Two words with a hyphen in between. The valves in the arteries leaving the heart which stop the backflow of blood.
  4. 5. This word means that there is little or no oxygen in blood- like the blood flowing through the right side of the heart and out to the lungs.
  5. 7. When the heart beats muscles which make up the atria and the ventricles are....
  6. 8. The word means that oxygen is in blood- like the blood which is pumped out of the left side of the heart to the body.
  7. 9. Two words. Takes blood away from the kidney.
  8. 11. The number of chambers the hearts has.
  9. 14. The main artery coming out of the left ventricle of the heart and supplying the rest of the body.
  10. 15. What valves do to prevent backflow of blood.
  11. 16. Two words. The main vein leading back into the heart.
  12. 20. The name of the side of the heart on the left hand of the a diagram.