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?
Higher Human Biology Unit 2 Physiology and Health 1 Atherosclerosis and Cardiovascular Disease
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?
What is atherosclerosis? The formation of plaques, atheromas, beneath the endothelium in the wall of an artery
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
Cardiovascular Diseases associated with Atherosclerosis Angina Heart attack Pain subsides with rest
Diseases associated with Atherosclerosis Stroke Peripheral vascular disease Pain felt in muscles to due inadequate blood flow
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?
Activities Write notes on atherosclerosis