osmoregulation

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Last updated 3:53 PM on 5/24/26
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5 Terms

1
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what type of feedback is osmoregulation

  • negative feedback

2
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what is osmoregulation

  • control of water potential.

3
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ADH role

  • peptide hormone

  • binds to receptors on collecting duct cells and causes aquaporins to fuse with membrane.

  • fusing allows water to diffuse into blood (reabsorbed)

4
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feedback loop for a fall in water potential

  • water potential falls

  • detected by osmoreceptors in hypothalamus.

  • more ADH released from posterior pituitary gland.

  • more water reabsorbed in collecting duct.

  • small urine volume.

5
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feedback loop for rise in water potential

  • water potential rises

  • detected by osmoreceptors in hypothalamus

  • less ADH released by posterior pituitary gland

  • less water reabsorbed in collecting duct

  • large volume of urine