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Biology

GCSE · AQA

QuestionsFlashcards

Communicable Diseases
Monoclonal Antibodies
- Producing Monoclonal Antibodies
  6
- Uses of Monoclonal Antibodies
  7
Plant Disease
- Detection and Identification of Plant Diseases
  6
- Plant Defence Responses
  6

CHD: A Non-Communicable Disease Flashcards

All 7 cards in this deck

What is coronary heart disease?: Layers of fatty material build up inside the coronary arteries, narrowing them. Blood flow is reduced, so the heart muscle receives less oxygen.
What is a stent and what does it do?: A mesh tube inserted into a coronary artery to keep it open, restoring blood flow and the oxygen supply to the heart muscle.
What do statins do?: They reduce blood cholesterol levels, which slows down the rate at which fatty material is deposited in the arteries.
What are the consequences of a faulty heart valve?: The valve may not open fully, restricting blood flow, or it may leak so blood flows backwards. The heart pumps blood less efficiently.
True or false? A patient given a mechanical heart valve must take anti-clotting drugs for the rest of their life.: True. Mechanical valves last longer than biological valves, but they can cause blood clots.
When is an artificial heart used?: To keep a patient alive while waiting for a heart transplant, or to allow their own heart to rest as an aid to recovery.
True or false? Fitting a stent cures coronary heart disease.: False. A stent only holds the narrowed artery open to restore blood flow; fatty material can still build up again.