B2 Keeping Healthy part 2

HideShow resource information
  • 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 ;)
1 of 20

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

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Microbes and disease resources »