Osmoregulation
- Created by: Tripat
- Created on: 31-10-12 12:54
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- Osmoregulation
- Definition
- Osmoregulation - control of water and salts in the body
- Altering the permeability of the collecting duct
- cool day ---> conserve less water ---> walls of collecting duct LESS permeable ---> dilute urine
- Hot day ---> conserve more water ---> collecting ducts are MORE permeable ---> conc urine then the walls of collecting ducts respond to ADH in the blood
- Therefore more ADH ---> more permeable channels inserted ---> more water reabsorbed by osmosis into the blood ---> less urine of a lowered water potential passes out of the body
- Adjusting the concentration of ADH in the Blood
- Water potential of the blood is monitored by Osmoreceptors in the Hypothalamus of the brain.
- These cells respond to the effects of osmosis.
- When the water potential is Low the Osmoreceptor Cells lose water by osmosis.
- Untitled
- Water potential of the blood is monitored by Osmoreceptors in the Hypothalamus of the brain.
- Definition
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