What is heart disease?

For example, in an exam if it says, what causes heart disease? (3 marks)

Would I say:
The lining of the artery is usually smooth so when a person has a diet high in saturated fat and smokes, it can cause an atheroma to develop, an atheroma consists of white blood cells & lipids clumped together. This atheroma stays under the lining the artery, narrowing the coronary artery lumen, decreasing its volume and causing blood to flow through at a high pressure. This can cause an aneurysm in the inner lining of the artery to push through the outer layer, causing a balloon like swelling which if bursts leads to a haemorrage or alternatively, the atheroma can rupture through the artery causing thrombosis (then I'd explain about blood clots etc). Is this too much?

For example, in an exam if it says, what causes heart disease? (3 marks)

Would I say:
The lining of the artery is usually smooth so when a person has a diet high in saturated fat and smokes, it can cause an atheroma to develop, an atheroma consists of white blood cells & lipids clumped together. This atheroma stays under the lining the artery, narrowing the coronary artery lumen, decreasing its volume and causing blood to flow through at a high pressure. This can cause an aneurysm in the inner lining of the artery to push through the outer layer, causing a balloon like swelling which if bursts leads to a haemorrage or alternatively, the atheroma can rupture through the artery causing thrombosis (then I'd explain about blood clots etc). Is this too much?