Edexcel IGCSE Biology · Spec 2.72B-2.76B
The Kidney and Nephron
How the kidney filters the blood by ultrafiltration and selective reabsorption to produce urine.
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The Kidney and Nephron
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Spec 2.72B-2.76B
What you need to know
- State the job of the kidneys
- Explain ultrafiltration
- Explain selective reabsorption
Active recall
Quick check
Answer each question before opening the answer.
Name the two main processes that happen in a nephron.
Ultrafiltration (in the glomerulus) and selective reabsorption (of glucose, some water and ions).
Which useful substance is normally reabsorbed completely?
Glucose.
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