Biology GCSE
dehydration
What dehydration means in Biology GCSE, as defined for OCR.
Definition of dehydration
Check what you remember
Read the wording for your board, then hide it and explain dehydration in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Heavy sweating causes significant water loss, reducing blood water potential, which osmoreceptors detect and which triggers thirst.
Topics that use dehydration
- Maintaining internal environments (OCR GCSE)
Related terms
- antagonistic hormones
- antidiuretic hormone
- blood glucose regulation
- Bowman's capsule and ultrafiltration
- collecting duct permeability
- Glucagon
- glycogen
- homeostasis
Using dehydration in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
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