12.3 Circulatory System Disorders
Arteriosclerosis Affects the arteries Symptoms walls thicken loose elasticity plaque builds up Symptoms chest pain shortness of breath heart attack blood clots 2
Heart Valve Disease Affects heart valves Causes: Effect: ageing damage from heart attack infection Effect: back flow (regurgitation) stenosis (narrowing) 3
Pericarditis Area: Pericardium (layer that surrounds the heart) Description: Inflammation of the pericardium Causes: viral or bacteria infection Effect: Puts pressure on the heart - can lead to heart attack 4
Cardiomyopathy Area affected: Septum and Ventricle walls Description: Heart muscle increases, disrupting the electrical activity, making it difficult to pump blood. Asymptomatic Death 5