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Coronary heart disease is an incredibly common disease. It involves the coronary arteries: the arteries which provide oxygenated blood to the heart tissue itself to keep it functioning. Remember that most ar...

To answer this we can start by breaking down the phrase itself. So, 'myo' always means muscle. 'Cardial' means of the heart. So myocardial infarction means infarction of the heart muscle. So what is infarcti...

Arteries have thick, elastic, muscular walls whereas veins have thin walls with few elastic fibres. Arteries need these properties to give them the strength and elasticity needed to cope with the high pressu...

A carbohydrate is a long molecule made up of lots of individual units called monosaccharides. These units are sugars, including glucose, fructose and lactose. When two of these units are bound together, it's...

Diffusion is the movement of particles from an area of high concentration to low concentration (down a concentration gradient). This occurs because the particles move randomly, and eventually end up evenly s...