Heart Disease

Question 1

How do atheromas form

Answer 1

Endothelium becomes damaged so white blood cells and lipids from the blood clump together under the lining forming fatty streaks. Over time more white blood cells, lipids and connective tissue build up and harden to form a fibrous plaque

Question 2

Why are arthrromas bad

Answer 2

Partially blocks the lumen of the artery and restricts blood flow, which causes blood pressure to increase

Question 3

How do aneurysms occur

Answer 3

Atheroma plaques damage and weaken arteries. They also narrow arteries, increasing blood pressure. When blood travels through a weakened artery at high pressure, it may push the inner layers of the artery through the outer elastic layer to form an aneurysm

Question 4

What causes a hemorrhage

Answer 4

An aneurysm bursting

Question 5

What causes a myocardial infarction

Answer 5

A coronary artery becomes blocked and an area of the heart muscle will be totally cut off from its blood supply, receiving no oxygen. This caused a myocardial infarction (heart attack)

Question 6

High blood pressure increases risk of damage to artery walls which

Answer 6

Increases risk of atheroma

Question 7

Atheroma causes blood clots which can cause

Answer 7

Myocardial infarcations

Question 8

High cholesterol diet increases fatty deposits which cause

Answer 8

Atheromas