The renal artery will take oxygenated blood from the heart into the glomerulus (this is part of a nephron, in a kidney, go to 2.71 if you are unsure what a nephron is/how it work). This blood will build up in pressure as it is 'squashed' up. Due to the high pressure, all small molecules (such as glucose, water, urea and salts) will pass through a membrane inbetween the glomerulus and the Bowman's capsule, (all the bigger molecules will stay in the blood). The filtered liquid (the small molecules, e.g. water, glucose, urea and salts) is known as the glomerular filtrate.
but isnt glucose a large molecule?
ReplyDeleteYes!! well done hahaha, in this case it is just smaller in comparison to some of the other components of blood, so it is squeezed out:))
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