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. what do the different types of white blood cells do

  • one engulfs and digests the micro-organism and the other makes antibodies
  • they all engulf and digest the micro-organisms
  • one engulfs and digests the micro-organism and the other makes antigens
  • one engulfs and digests the micro-organism the other sticks to the micro-organism

3. what does the thick outer wall of arteries (collagen) do

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

4. what is homeostasis

  • keeping a constant internal environment
  • keeping a constant external environment
  • keeping an non constant internal/external environment

5. 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

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