Card Set Information

2015-11-30 15:31:03

Science yr9
Show Answers:

  1. What is the function of the breathing system?
    To breathe air in and out of the lungs.
  2. What is the function of your lungs?
    To exchange Co2 and O2 between the blood and the lungs.
  3. Where are your lungs situated?
    In your thorax
  4. What is gas exchange?
    The movement of oxygen from air to the blood and carbon dioxide in the opposite direction.
  5. How are the alveoli well adapted for gas exchange?
    • They're well ventilated
    • They have a large surface area
    • They have a good blood supply
    • Their cell walls are thin
    • They each have a thin layer of water so diffusion of the gases become quicker and easier
  6. What is the Circulatory System's function?
    To transport substances around the body.
  7. What makes up the circulatory system?
    Blood, Blood vessels and the heart.
  8. What sides of the heart pumps deoxygenated and oxygenated blood?
    • The right side pumps deoxygenated blood from the heart to the lungs
    • The left side pumps oxygenated blood around the body
  9. Plasma
    A fluid in the blood which carries other blood components
  10. Platelets
    Play crucial roles in blood clotting
  11. White blood cells
    engulf invading pathogens
  12. Red blood cells
    Carry oxygen around the body
  13. Arteries
    Carry blood away from the heart
  14. Veins
    Carry blood to the heart
  15. Capillaries
    Carry blood to the body cells
  16. What are transverse waves?
    These oscillate up and down whilst the wave pattern moves horizontally
  17. Wavelength
    The distance between two peaks or troughs
  18. Amplitude
    The distance between the equilibrium position and a peak or trough
  19. Peak/ Crest
    The highest point of a wave
  20. Trough
    The lowest point of a wave
  21. equilibrium position
    Middle of the wave