Controlling water balance (AQA GCSE Biology): Flashcards
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Practise the cards
15 cards from this deck
Role of the urinary system
Role of the urinary system
Maintains water balance & removes waste
3 ways body loses water
3 ways body loses water
Lungs (exhale), skin (sweat), urine
Which water loss can body control?
Which water loss can body control?
Only urine loss (not lungs or skin)
Main organs controlling water balance
Main organs controlling water balance
Kidneys
Step 1 of kidney function
Step 1 of kidney function
Filtration - removes waste & excess water from blood
Step 2 of kidney function
Step 2 of kidney function
Selective reabsorption - glucose & water back to blood
Function of renal arteries
Function of renal arteries
Carry blood from body to kidneys
Function of renal veins
Function of renal veins
Carry cleaned blood back to body
Function of ureters
Function of ureters
Carry urine from kidneys to bladder
Function of bladder
Function of bladder
Stores urine
Function of urethra
Function of urethra
Carries urine outside the body
Red blood cells in high concentration fluid
Red blood cells in high concentration fluid
Lose water & become crinkled
Red blood cells in low concentration fluid
Red blood cells in low concentration fluid
Gain water & burst
Urea concentration: urine vs plasma
Urea concentration: urine vs plasma
60 times higher in urine
Glucose in healthy urine
Glucose in healthy urine
None (all glucose reabsorbed by kidneys)