Homeostatic Regulation by the Kidneys (Grade 11 NSC Matric Life Sciences): Flashcards
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Definition of homeostasis
Definition of homeostasis
Body's ability to maintain stable internal environment
Body temp maintained by homeostasis
Body temp maintained by homeostasis
Around 37°C
Three mechanisms kidneys regulate
Three mechanisms kidneys regulate
pH regulation, water levels, salt levels
Definition of osmoregulation
Definition of osmoregulation
Process controlling water & salt levels in blood/tissue fluids
ADH produced by which gland
ADH produced by which gland
Hypothalamus (released by pituitary)
Effect of high ADH levels on water reabsorption
Effect of high ADH levels on water reabsorption
More water reabsorbed, concentrated urine produced
Effect of low ADH levels on urine
Effect of low ADH levels on urine
Less water reabsorbed, dilute urine produced
How alcohol & caffeine affect water loss
How alcohol & caffeine affect water loss
Act as diuretics, increase water loss via urination
Hormone that regulates salt levels
Hormone that regulates salt levels
Aldosterone (from adrenal glands)
Effect of high aldosterone on sodium
Effect of high aldosterone on sodium
Increased sodium reabsorption in kidneys