B2 Keeping Healthy part 2

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

1. what does the elastic fibres of an artery do

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

2. what happens in most human trials

  • one group takes new drug. the controls (another group) takes a placebo or an existing drug for that illness
  • a group of people take a new drug
  • humans are raced on an Olympic course

3. what does the muscle inside an artery do

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

4. what does the blood bring to the heart

  • oxygen and glucose
  • waste products and glucose
  • only oxygen

5. what happens in a double-blind trial

  • 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
  • neither doctors or patients know who is in which group
  • doctors know who is in which group but patients do not

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