Cardiovascular Disease

Mind Map by joejthomas, updated more than 1 year ago
Created by joejthomas about 6 years ago


A-level Biology Mind Map on Cardiovascular Disease, created by joejthomas on 01/18/2014.

Resource summary

Cardiovascular Disease
1 Aneurysm (saccular)
1.1 Atheroma plaque weakens arteries & increases blood pressure
1.1.1 Blood travels through artery at high pressure Pushes inner layers through outer elastic layer of the artery Balloon-like swelling This can burst causing Haemorrhage
2 Thrombosis
2.1 Atheroma plaque can rupture endothelium
2.1.1 Damages artery wall leaves a rough surface Platelets and fibrin build up at the site Blood clot (Thrombus) Complete blockage Dislodged and end up elsewhere Debris from clot can cause more clots
3 Atheroma
3.1 Artery wall made of multiple layers
3.1.1 Endothelium (inner lining) - Smooth If damage occurs to Endothelium, lipids and white blood cells clump together to form 'fatty streaks' Over time, this continues. Connective tissue builds up, this hardens to form fibrous plaque Atheroma Partial blockage of Lumen Restricts blood flow Blood pressure may increase
4 Myocardial Infarction
4.1 Coronary arteries supply heart
4.1.1 Oxygen for respiration Myogenic Muscle If a coronary artery becomes blocked, it receives no oxygen Myocardial infarction (Heart attack) Chest pain Sweating Short of Breath
5 Risk Factors
5.1 Cholestrol
5.1.1 <240mg/100cm3 One of the main products that lead to atheromas Blood clots could block coronary arteries
5.2 Smoking
5.2.1 CO bonds with haemoglobin Less oxygen
5.2.2 reduces antioxidants in blood
5.3 Hypertension
5.3.1 Increases risk of damage to artery walls Atheroma
5.3.2 Obesity
5.3.3 Alcohol
5.3.4 Lack of exercise
5.4 Genetic & controlled
5.4.1 Genetic predisposition e.g. Diabetes heart arrhythmias
Show full summary Hide full summary


Biology Unit 2 - DNA, meiosis, mitosis, cell cycle
Cells And Cell Techniques - Flashcards (AQA AS-Level Biology)
Henry Kitchen
Using GoConqr to study science
Sarah Egan
GCSE AQA Biology - Unit 2
James Jolliffe
Biology AQA 3.1.3 Osmosis and Diffusion
Biology AQA 3.2.5 Mitosis
GCSE AQA Biology 1 Quiz
Lilac Potato
Biology- Genes and Variation
Laura Perry
Biology AQA 3.1.3 Cells
Enzymes and Respiration
I Turner
Biology- Genes, Chromosomes and DNA
Laura Perry