Kidney function
What Kidney function means in Biology GCSE, as defined for AQA, OCR.
Definitions of Kidney function
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Reference: OCR
Filtering the blood and varying urine volume and concentration to maintain water balance, and excreting nitrogenous metabolic waste, specifically urea, alongside excess mineral salts and water.
The kidneys regulate the water content of body fluids by adjusting how much water is reabsorbed from the filtrate back into the blood.
The kidneys filter urea from the blood and excrete it in urine.
Topics that use Kidney function
- Maintaining water and nitrogen balance in the body (biology only) (AQA GCSE)
- Maintaining internal environments (OCR GCSE)
Related terms
- Ammonia
- antagonistic hormones
- antidiuretic hormone
- blood glucose regulation
- Bowman's capsule and ultrafiltration
- collecting duct permeability
- Composition of blood plasma and urine
- Consequences of imbalance
Using Kidney function in the exam
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