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Allergy is the result of the immune system overreacting to harmless stimuli in the environment.

Examples of stimuli or 'allergens' include pollen, dust, eggs and milk.

The b...

There are 3 key stages in filtration through the Kidney:

1. Firstly, blood is pushed through a tubular structure called the glomerulus - imagine a bowl of noodle...

At rest the membrane potential is -70mV.

This is due to the  Na⁺/K⁺ pump, which actively transports 3 Na⁺ ions out of th...

A nerve impulse travelling down a motor neurone causes the release of acetylcholine from the synpatic knob into the synaptic cleft. This then diffuses across the synaptic cleft down its concentration grad...

Proteins are made up of organic molecules called amino acids. There are thousands of different proteins with diverse functions: storage, transport, structural support, cellular communi...