What are the three main roles the kidneys perform?
removal of urea from blood, adjustment of ion levels, adjustment of water content
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What is ultrafiltration?
a high pressure is built up which squeezes water, urea, ions and glucose out of the blood and into the Bowman's capsule
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How is the amount of water reabsorbed in the kidney nephrons controlled?
by the anti-diuretic hormone (ADH)
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What does the brain monitor?
the water content of the blood
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What does the brain instruct the pituitary gland to do?
release ADH into blood according to how much is needed
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What is the whole process of water content regulation by a mechanism called?
Negative feedback
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What does negative feedback do if the water content gets too high/low
negative feedback brings it back to normal
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If a patient has a kidney failure and they can't filter their blood properly, what can be used to filter their blood for them?
Dialysis machine
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What does the dialysis fluid have the same concentration of?
salts and glucose
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What is the barrier permeable to?
ions and waste
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What is the barrier not permeable to?
big molecules like proteins
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What are the precautions taken when having a kidney transplant?
a donor with a tissue type that closely matches the patient is chosen and the patient is treated with drugs that suppress the immune system so that their immune system won't attack the transplanted kidney
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Other cards in this set
Card 2
Front
What is ultrafiltration?
Back
a high pressure is built up which squeezes water, urea, ions and glucose out of the blood and into the Bowman's capsule
Card 3
Front
How is the amount of water reabsorbed in the kidney nephrons controlled?
Back
Card 4
Front
What does the brain monitor?
Back
Card 5
Front
What does the brain instruct the pituitary gland to do?
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