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CAIE A-Level Biology 14.1.8 Osmoregulation with ADH

Practise tracing low blood water potential through osmoreceptors and ADH release to cAMP-driven aquaporin insertion, water reabsorption and negative feedback.

Syllabus
2028–2030
Course
Biology 9700
Level
A2

Exam points

  • link low blood water potential with osmoreceptor stimulation and increased ADH release
  • explain ADH-triggered aquaporin insertion and greater collecting-duct water permeability
  • predict concentrated low-volume urine and feedback reduction of ADH after correction

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