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As an action potential arrives at the presynaptic knob, the membrane is depolarised. This causes calcium channels in the membrane to open and calcium ions to flood in. This influx of calcium causes vesicl...

To do this we will use the chain rule, whereby dy/dx = dy/du * du/dx. So if y = (ax^2+bx+c)^n then we will say that u = ax^2+bx+c. Therefore y =u^n. So to find dy/dx we differentiate u with respect to x, ...

Geostationary orbits: -have a time period of 24 hours -have an angular speed equal to that of the Earth - maintain above a fixed position on the Earth's surface at all times. Therefore, they are very good...

The work done on a body is defined as the force applied to that body multiplied by the distance it is applied over.

Many (Not all) neurons are myelinated by schwann cells. The myelination covers the neuron with a fatty layer with small gaps between each schwann cells. These small gaps are called nodes of ranvier. When ...