The kidney,nephron,and menstrual cycle
- Created by: Nasra
- Created on: 10-05-13 09:39
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- B3 Topic 1
- The urinary system
- The role is to produce store and remove urine
- The major organ of the urinary system is the kidney
- Kidney transplants or kidney dialysis are two treatments for kidney failure
- The bodys two kidneys remove excess water and urea
- Three stages of working of the kidney are,filtration,selective reabsorbtion,and excretion of waste
- The nephron is the function unit of the kidney,each kidney contains around a million of them each nephron drains into a collecting duct
- If blood water level to low the salt concentration is high so more ADH is released meaning more water is reabsorberd so there is only a small amount of concentated urine
- Blood water leavel to high,meaning salt concentration is low,leass ADH absorbed into blood by the pituitary gland so there is a large amount of dilute urine
- If blood water level to low the salt concentration is high so more ADH is released meaning more water is reabsorberd so there is only a small amount of concentated urine
- The amount of water reabsorbed by the kidneys is contolled by adh in the pituitary gland
- The role of ADH in the kidney is an example of negative feedback
- ADH affects the permeability of water tubules
- The urinary system
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