Coronary Heart Disease
Biology: AQA GCSE Higher, topic 2.4.8
Coronary Heart Disease
Coronary heart disease is a non-communicable disease. This means that it cannot be transmitted from one organism to another.
What happens when you have coronary heart disease?
- The coronary arteries narrow because of a build-up of fatty deposits.
- This reduces blood flow and leads to a lack of oxygen being supplied to the heart muscle.
Analogy: a tunnel
- Imagine people carrying wood to a fire through a tunnel.
- If the tunnel narrows, fewer people can fit through the tunnel.
- This means that the fire will start to die out as less wood can reach it.
Test yourself on Coronary Heart Disease
Why can a person not catch coronary heart disease from someone who already has it?
Why does narrowing of the coronary arteries lead to less oxygen reaching the heart muscle?
In the tunnel analogy for coronary heart disease, what does the narrowing tunnel represent?
In the tunnel analogy for coronary heart disease, why does the fire start to die out when the tunnel narrows?
In the tunnel analogy for coronary heart disease, what does the wood represent?