- The first process occurs at the Bowman's capsule - the filtration process begins.
- Blood arrives in the kidney in the afferent arteriole, a wide vessel (coming in - high pressure).
- The blood vessel coming out has a smaller diameter than the one coming in. This means that it develops a high pressure. The blood pressure increases in the glomerulus.
- The high pressure forces the liquid within blood, plasma (contains water, salts, amino acids, glucose and urea), out of the blood vessel and into the space = inside of the Bowman's capsule.
- When the plasma is forced into the Bowman's capsule, plasma --> "glomerular filtrate"
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