Biology Topic Practice

Coronary Heart Disease

Coronary heart disease (CHD) occurs when fatty material builds up inside the coronary arteries, reducing blood flow to the heart.

Do you know the pros and cons of statins?

What is Coronary Heart Disease?

"Coronary heart disease is a condition where layers of fatty material build up inside the coronary arteries, narrowing them and reducing blood flow to the heart."

Question 1

What happens in coronary heart disease?

Question 2

How do statins help reduce the risk of coronary heart disease?

Question 3

What does a stent do?

Treatments for CHD

Stents use metal mesh to keep coronary arteries open. Statins are drugs that reduce blood cholesterol levels.

Severe cases may require heart valve replacement or an artificial heart.

Exam Tip

Faulty heart valves can be replaced by biological (animal) or mechanical valves.

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