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Question

Study the diagram given alongside and then answer the questions that follow:
What is the technical term given to the process occurring in 2 and 3? Briefly describe the process.

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Solution

Ultrafiltration is the technical term given to the process occurring in 2 and 3.
The blood flows through the glomerulus under great pressure which is much greater than in the capillaries elsewhere. The reason for this greater pressure is that the efferent arteriole is narrower than the afferent arteriole. This high pressure causes the liquid part of the blood to filter out from the glomerulus into the renal tubule. This filtration under extraordinary force is called ultrafiltration.

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