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The alveoli are sac like structures which have a large surface area to volume ratio allowing for fast diffusion of oxygen into the blood (Fick's law). This large SA:V ratio is generated because the alv...

Firstly the heart is myogenic, thereofore is controlled by the autonomic nervous system hence doesnt require conscious control. The pumping mechanism of the heart begins with stimulation of the Sinoatrial...

To find the gradient of a straight line we can use the change in the X and Y directions.

The gradient (Slope) of a straight line is defined as :

​Grad = (Change in Y) / (Cha...

One thing to remember when writing philosophical essays is that it is very important to be as clear as possible. Let's face it, philosophy is difficult, full of categorical imperatives and hard problem...

The glomerulus is a knot of cappilaries inside the Bowman's capsule. The afferent arteriole (small blood vessel leading into the glomerulus) has a much larger diameter than the efferent arteriole (smal...