B2 Keeping Healthy part 2
- Created by: 1i22y
- Created on: 27-01-16 20:30
Other questions in this quiz
2. what does the elastic fibres of an artery do
- ensure it is smooth to allow efficient blood flow
- 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
- contract and increase blood pressure
3. 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
4. why is the amount of muscle and elastic fibres small
- because there is more fat surrounding themwhat do cappilaries do
- because high pressure does not need to be maintained as the blood is at a lower pressure in veins than in arteries
- because there is less blood being pumped from th right lower chamber
5. when does antimicrobial resistance develop
- when random changes (mutations) in genes of bacteria or fungi make new varieties that the antimicrobial cannot kill or inhibit
- when random changes (mutations) in genes of brains kill microorganisms
- when it rains chocolate
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