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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
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
19. Your feet nd hands feel the cold first
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