GCSE BIOLOGY 3

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ghoran
ID:
200042
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GCSE BIOLOGY 3
Updated:
2013-02-12 14:55:47
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  1. respiring cells produce oxygen
    that is transported to the lungs in the red blood cells , attached to heamoglobin forming oxyhemoglobin
  2. respiring cells produce glucose that is transported to the
    small intestine , glucose is dissolved in the plasma of the blood
  3. amino acids are transported from the
    cells to the small intestine , amino acids are dissolved in the plasma
  4. urea is transported from the
    • kidney to the liver 
    • the urea is dissolved in the plasma
  5. respiring cells produce carbon dioxide that is transported to the
    lungs the carbon dioxide is dissolved in the plasma
  6. what are the walls of the heart made of
    muscle
  7. what are the 4 sections of the heart called
    chambers
  8. what are the chambers at the top of the heart called
    atrium
  9. what are the chambers at the bottom of the heart called
    ventricles
  10. what are the blood vessels that carry blood away from the heart called
    arteries
  11. what are the blood vessels that carry blood towards the heart called
    veins
  12. what are the structures called that are inside the heart and and prevent blood flowing backwards
    valves
  13. the events that happen as blood flows into and out of the heart are called the
    cardiac cycle
  14. 1) in the cardiac cycle , deoxygenated blood returns from the body in a blood vessel called the
    vena cava
  15. 2) the blood enters the chamber of the heart called the
    right atrium
  16. 3) the right atrium contracts and the blood moves through a valve into the chamber called the
    right ventricles
  17. 4) the right ventricle contracts and the blood is pushed out of the heart and into a blood vessel called the
    pulmonary artery
  18. 5) this blood vessel carries the blood to the
    lungs
  19. 6) the blood returns to the heart in a blood vessel called the
    pulmonary  veins
  20. 7) the oxygenated blood enters the chamber of the heart called
    the left atrium
  21. 8) the left atrium contracts and the blood moves through a valve into the chamber called the
    left ventricle
  22. 9) the left ventricle contracts and the blood is pushed out of the heart and into a blood vessel called the
    aorta
  23. 10) this is the end of the cardiac cycle . in the cardiac cycle blood is pumped to the lungs so that it can become
    oxygenated
  24. the left ventricle has the thickest walls of any chamber in the heart , as the blood from this chamber has to be pumped
    around the body
  25. what are the blood vessels on the surface of the heart called
    coronary arteries
  26. what is the function of the coronary arteries
    to supply oxygen and glucose to the muscles for respiration 
  27. what happens if one of the blood vessels becomes blocked 
    you may get a heart attack 
  28. explain the cardiac cycle 
    • deoxygenated blood returns from the body in vena cava - a type of blood vessel 
    • the blood enters the chamber of the heart called the right atrium 
    • the right atrium contracts and the blood moves through a valve into the chamber called the right ventricles 
    • the right ventricles contract and the blood is pushed out of the heart and into a blood vessel called the pulmonary artery 
    • this blood vessel carries the blood to the lungs
    • the blood returns to the heart in a blood vessel called the pulmonary veins
    • the oxygenated blood enters the chamber of the heart called the left atrium 
    • the left atrium contracts and the blood is pushed out of the heart and into a blood vessel called the aorta 
    • this is the end of the cardiac cycle , blood is pumped to the lungs so that it can become oxygenated 

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