B2 Keeping Healthy part 2

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  • Created by: 1i22y
  • Created on: 27-01-16 20:30

1. how does a heart attack occur

  • coronary arteries carry oxygenated blood to the heart. fat can build up on the artery walls. a blood clot may form on this fat. this may block the artery and stop oxygen getting to the heart. heart cells die and the heart is permanently damaged.
  • when your heart attacks ;)
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Other questions in this quiz

2. why are long term drug trials useful

  • to ensure that the drug is safe and that it works. it also is used to identify any long-term side affects that don't happen imediately
  • because they show any humans that don't like it
  • because it shows whether the drug is available for long-term use (supply)

3. what does the muscle inside an artery do

  • recoil, which allows normal conditions to return after contraction
  • contract and increase blood pressure
  • ensure that there is thick outer walls to protect them from bursting due to high pressure
  • ensure it is smooth to allow efficient blood flow

4. what do capillaries do

  • take blood to and from tissues
  • take blood to and from the heart to the rest of the body
  • take blood to and from the heart to the lungs

5. what happens in a double-blind trial

  • neither doctors or patients know who is in which group
  • doctors know who is in which group but patients do not
  • both the patient and the doctor know whether the patient is given the new drug. these trials are used when the patient cannot affect the outcome of using the drug


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