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AS Human Biology
AS Human Biology revision cards based on AQA.
| Question | Answer |
|---|---|
| Coronary heart disease is a collective term for diseases of the _____ _______. These include a______, a_________, and m_________ i___________. | Heart vessels Angina Aneurysm Myocardial infarction |
| An _______ is a fatty deposit that builds up inside the wall of _______. It is more likely to develop when the _______ of the arteries has been ________. This is usually caused by ____ _____ ________. | Atheroma Arteries Lining Damaged High blood pressure |
| When atheromas occur, _______ engulf _______ _________ by phagocytosis, creating foam cells. These foam cells invade the ______ wall and form fatty _______. These build up and begin to narrow the _______. | Phagocytes/macrophages Cholesterol droplets Artery Plaques Lumen |
| After some years, _______ is deposited in the atheroma, making the artery wall _______ and less ________. | Calcium Harder Less flexible |
| As an atheroma builds, the artery lining becomes _______. The _______ layer may split, disturbing the _____ _____ through the artery. This then becomes ________, and a _____ _____ is more likely to form. | Rough Endothelium Blood flow Turbulent Blood clot |
| A forming blood clot is called a _______. They can get so large that they block the _____ ______ through the ______. | Thrombus Blood supply Artery |
| A piece of clot could break off called an _______. This travels in the blood until it reaches a ______ artery. This could cut off the _____ ______ to a particular ______. When a thrombus blocks an artery, it is called ________. | Embolus Narrowed Blood Supply Tissue Thrombosis |
| Cardiac muscle is constantly __________ and ________ and so has a high rate of __________. _______ arteries branch off the _____ and supply the heart with _______ and ________. | Contracting Relaxing Respiration Coronary Aorta Glucose and oxygen |
| Coronary arteries can become blocked by an ________ or __________. The heart muscle can't obtain enough _______ or ______ and the region _____. This leads to ________ ________. | Atheroma or thrombosis Glucose or oxygen Dies Myocardial infarction |
| Chest pain can be a symptom of ______, caused by atheroma. When the _____ becomes ________, it reduces |
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