1. What do I know? What is an electrocardiogram?
What are electrocardiograms used for?
What does PQRST stand for in an electrocardiogram reading?
How do you calculate heart rate from an electrocardiogram?
What is blood pressure?
What affects blood pressure
How is blood pressure measured?
What is hypertension?
What does hypertension lead to?

2. Higher Human Biology Unit 2 Physiology and Health
1 Atherosclerosis and Cardiovascular Disease

3. What do I need to know? What is atherosclerosis?
What causes atherosclerosis to occur?
What effect does atherosclerosis have on arteries and blood pressure?
Which cardiovascular diseases is atherosclerosis associated with?

4. What is atherosclerosis?
The formation of plaques, atheromas, beneath the endothelium in the wall of an artery

5. What is atherosclerosis cont’d
Plaques are mainly composed of cholesterol
Atheromas increase in size over time
Fibrous material, calcium and more cholesterol are added
Blood flow through artery decreases, increasing blood pressure
Walls of artery thicken and elasticity decreases
Calcium makes the blood vessel brittle
Atheromas can rupture

9. Cardiovascular Diseases associated with Atherosclerosis
Angina
Heart attack
Pain subsides with rest

10. Diseases associated with Atherosclerosis
Stroke
Peripheral vascular disease
Pain felt in muscles to due inadequate blood flow

11. What do I know? What is atherosclerosis?
What causes atherosclerosis to occur?
What effect does atherosclerosis have on arteries and blood pressure?
Which cardiovascular diseases is atherosclerosis associated with?

12. Activities
Write notes on atherosclerosis