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What is the Nephron?
Each of the functional units in the kidney, consisting of a glomerulus and its associated
tubule, through which the glomerular filtrate passes before emerging as urine.
Each nephron starts in the cortex. In the cortex the capillaries form knots called the
glomerulus. This is surrounded by…

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Step 1. Blood flows into the glomerulus from the renal artery
Step 2. High blood pressure in the glomerulus forces water, glucose, urea and salts through
the capillary wall and into the tubule. Protein molecules and blood cells are too big so they
remain in the blood.
Step 3. Blood…

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