This memory aid covers Memory Aids within Water Regulation for GCSE Biology. Topic 7: Water Regulation It is section 7 of 11 in this topic. Use it for quick recall, then test yourself straight afterwards so the memory aid becomes usable in an answer.
Topic position
Section 7 of 11
Practice
15 questions
Recall
20 flashcards
Memory Aids
ADH = "Anti-Dilute Hormone": When you are dehydrated (blood is too concentrated), ADH stops your urine from being dilute. More ADH = more concentrated urine = less water lost. If you remember "anti-dilute" rather than "antidiuretic," you will never confuse the direction of ADH action.
The ADH feedback loop — "DRIED":
- Dehydration detected by osmoreceptors
- Released from pituitary gland into blood
- Increases permeability of collecting duct
- Extra water reabsorbed into blood
- Dark concentrated urine produced
Nephron processes — "FRE": Filtration → Reabsorption → Excretion. Three letters, three stages, in order. All glomerular filtrate starts at F; useful stuff returns at R; waste leaves at E.