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6. What does the processing centre do?

  • Receives information and then it coordinates our response
  • detect when things change like temperature
  • produce a response to ensure our (e.g.) temp stays at 37 degrees C

7. What do effectors do?

  • detect when things change like temperature
  • produce a response to ensure our (e.g.) temp stays at 37 degrees C
  • Receives information and then it coordinates our response

8. What is negative feedback?

  • Bad feedback from your teachers one your last test
  • Ensures in any control system that any changes are reversed and returned to the set level
  • Feedback is given to the brain when it isn

9. What does negative feedback control?

  • Body temperature, blood oxygen levels and salt levels
  • Body temperature, height, age and weight
  • Body temperature and blood oxygen levels
  • Body temperature, salt levels and your height

10. What do the kidneys filter out from the blood?

  • Drink, salts, glucose and urine
  • Water, salts and urine
  • Water, salts, glucose and urea
  • Water, salts, glucose and urine

11. What do the kidneys then put back into the blood?

  • All the glucose and as much salt and water as needed
  • Some of the glucose and all of the water and salt
  • Everything
  • Urea and all of the glucose

12. Urine is temporarily stored in the ________

  • Stomach
  • Bladder
  • Kidneys
  • Liver

13. Urine is made up of .........

  • Glucose and some urea
  • Urea, glucose, some salt and some water
  • Urea, some water and some salts
  • Glucose and some water
  • Glucose, some water and some salts

14. Dilute urine means that the water level in the blood plasma is low, therefore the kidneys have not filtered much out of it

  • False
  • True

15. The urine concentration changes depending on the....

  • Internal temperature, exercise levels and intakes of sugars and salt
  • External temperature, exercise levels and intakes of fluids and salts
  • Internal temperature, exercise levels and intakes of fluids and salts
  • External temperature, exercise levels and intakes of fluids and sugar

16. Water is lost in....

  • Urea, breathing in and sweat
  • Faeces, urine and sweat
  • Urine, breathing out, faeces and sweat
  • Urine, when you breathe out and sweat
  • Breathing in, urine, faeces and sweat

17. The thermoregulatory centre is in the....

  • Spine
  • Heart
  • Brain
  • Bone marrow
  • Kidneys

18. High temperatures cause hypothermia

  • False
  • True

19. Your feet nd hands feel the cold first

  • True
  • False

20. Why does this happen? (referring to last question)

  • Because the body works to maintain its core temperature
  • Because the body works to maintain its exernal temperature
  • Because the body insures that your feet and hands get warm first