Difference between revisions of "Kidney"
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+ | :[https://www.amazon.co.uk/gp/product/0198359810/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359810&linkCode=as2&tag=nrjc-21&linkId=d768d99f1a06f7c12fab40e5aef85a55 ''Kidneys, pages 120-124, 242, Gateway GCSE Biology, Oxford, OCR ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945660/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945660&linkCode=as2&tag=nrjc-21&linkId=83aa4500ad7759e7f401a1c5ba5df758 ''Kidneys, pages 54, 55, Gateway GCSE Biology; The Revision Guide, CGP, OCR ''] |
Latest revision as of 16:23, 13 December 2019
Contents
Key Stage 3
Meaning
Kidneys are organs in the excretory system that removes urea and excess water from the blood.
About the Kidneys
- The kidneys are linked to the bladder by ureters.
- The kidneys filter the blood to remove some toxic substances.
Key Stage 4
Meaning
Kidneys are organs in the excretory system that removes urea and excess water from the blood.
About the Kidneys
- The kidneys are responsible for osmoregulation as well as the removal of urea from the blood.
- As blood passes through the kidneys water, urea, glucose and salts diffuse from capillaries into the kidney tubules at in a structure called a nephron. Glucose is completely reabsorbed into the blood while water is selectively reabsorbed depending on the water concentration in the blood.
- The selective re-absorption of water is affected by anti-diuretic hormone. When the levels of anti-diuretic hormone are high most of the water is reabsorbed into the blood. When the levels of anti-diuretic hormone are low the water is not re-absorbed and is passed down the ureters to the bladder.
Extra Information
References
AQA
- Kidneys, pages 155-8, GCSE Biology, Hodder, AQA
- Kidneys, pages 186-191, GCSE Biology; Third Edition, Oxford University Press, AQA
- Kidneys, pages 215, 219-221, GCSE Biology, CGP, AQA
- Kidneys, pages 75, 76, GCSE Biology; The Revision Guide, CGP, AQA
- Kidneys; kidney failure, pages 219, 220, GCSE Biology, CGP, AQA
- Kidneys; kidney transplants, pages 220, 221, GCSE Biology, CGP, AQA
Edexcel
- Kidneys, pages 156, 158-159, GCSE Biology, Pearson, Edexcel
- Kidneys, pages 246-248, 250, 251, GCSE Biology, CGP, Edexcel
- Kidneys, pages 84, 85, GCSE Biology; The Revision Guide, CGP, Edexcel