Cardiovascular disease (AQA GCSE Biology): Flashcards
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15 cards from this deck
What is cardiovascular disease?
What is cardiovascular disease?
Problems with the heart and blood vessels
What is a non-communicable disease?
What is a non-communicable disease?
Disease that cannot be spread person to person
Cause of coronary heart disease
Cause of coronary heart disease
Fatty material builds up in coronary arteries
What do coronary arteries supply to heart?
What do coronary arteries supply to heart?
Oxygen and nutrients to heart muscle
What is a stent?
What is a stent?
Small wire frame that props open an artery
Function of heart valves
Function of heart valves
Control blood flow and ensure right direction
Effect of faulty heart valves
Effect of faulty heart valves
Heart less efficient at pumping blood
Two types of replacement heart valves
Two types of replacement heart valves
Mechanical and biological valves
Materials for mechanical heart valves
Materials for mechanical heart valves
Metals or strong plastics
Sources of biological heart valves
Sources of biological heart valves
Human donors, cows, or pigs
What is heart failure?
What is heart failure?
Heart cannot pump enough blood to meet body's needs
Purpose of artificial hearts
Purpose of artificial hearts
Keep patients alive while waiting for transplant
What do artificial pacemakers do?
What do artificial pacemakers do?
Send electrical signals to correct irregular heartbeats
What do statins do?
What do statins do?
Lower cholesterol levels in blood
How do statins prevent heart disease?
How do statins prevent heart disease?
Lower cholesterol, reducing fatty buildup in arteries