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Flashcards · Biology · The Kidneys

ADH and Water Balance (Higher tier)

16 cards

  1. What does ADH stand for?

    Antidiuretic hormone.

  2. Which gland releases ADH?

    The pituitary gland.

  3. What does ADH act on?

    The collecting ducts in the kidneys.

  4. What does ADH do?

    Makes the collecting duct more permeable to water.

  5. What happens when there is more ADH?

    More water is reabsorbed.

  6. What is the urine like with a lot of ADH?

    A small volume, and concentrated.

  7. What is the urine like with little ADH?

    A large volume, and dilute.

  8. What detects the water content of the blood?

    The hypothalamus.

  9. When is more ADH released?

    When the blood water content is low.

  10. How is the water reabsorbed?

    By osmosis.

  11. What type of control is this?

    Negative feedback.

  12. What happens to ADH when the water content returns to normal?

    Less ADH is released.

  13. Why is urine dark on a hot day?

    It is concentrated, because more ADH is released.

  14. What is dehydration?

    Loss of too much water from the body.

  15. What does the hormone travel in?

    The blood.

  16. Common mistake about ADH?

    Saying it makes water by active transport. The water moves by osmosis.