The Urinary System (LC 2027) (Leaving Cert Biology): Flashcards
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14 cards from this deck
Osmoregulation
Osmoregulation
Controlling water & salt concentrations for homeostasis
How body controls osmoregulation
How body controls osmoregulation
By regulating urine production
Full name of ADH
Full name of ADH
Anti-diuretic hormone (vasopressin)
Where ADH stored
Where ADH stored
Pituitary gland
ADH target organs in kidneys
ADH target organs in kidneys
Distal tubules & collecting ducts
Main function of ADH
Main function of ADH
Increases water reabsorption in kidney tubules
What 'anti-diuretic' means
What 'anti-diuretic' means
Works against excessive urine production
What triggers ADH release
What triggers ADH release
Concentrated blood plasma (detected by hypothalamus)
ADH effect on tubule walls
ADH effect on tubule walls
Makes them more permeable to water
Urine with high ADH
Urine with high ADH
Low volume, concentrated
When ADH not released
When ADH not released
When blood plasma normal or dilute
Urine with no/low ADH
Urine with no/low ADH
High volume, dilute
ADH feedback mechanism type
ADH feedback mechanism type
Negative feedback
High ADH effect on urine volume
High ADH effect on urine volume
Decreases it (low volume)