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Biology-homeostasis > The Kidneys > Flashcards

The Kidneys Flashcards

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1
Q

How can water be lost?

A
  • skin -sweat
  • lungs-exhalation
  • kidneys-urine
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2
Q

Hat happens if there is too much or too little water?

A

Cells don’t function correctly

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3
Q

What happens to amino acids in the liver?

A

Deaminated to form ammonia

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4
Q

What is selectively re absorbed ?

A
  • water
  • some ions
  • glucose
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5
Q

What is removed by th body in urine ?

A
  • urea
  • ions
  • water
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6
Q

What is the process called when the body fitted out waste products?

A

Filtration

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7
Q

What is the process when useful products are re absorbed back into the blood stream?

A

Selective reabsorption

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8
Q

What is the kidneys work controlled by?

A

A hormone called ADH

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9
Q

Why does ADH stand for?

A

Anti-duretic hormone

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10
Q

What release ADH ?

A

The pituitary gland

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11
Q

What does more ADH mean?

A

More water is re absorbed

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12
Q

What does less ADH mean ?

A

Less water is re absorbed

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13
Q

What does ADH do?

A

Informs the kidney of how much water to reabsorb

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14
Q

What do kidneys do?

A

Remove waste substances from the blood

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15
Q

How is kidney failure treated?i

A
  • Transplant

* dialysis

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16
Q

If more ADH is released what does the urine look like?

A
  • smaller volume

- more concentrated eg darker

17
Q

How long does dialysis take ?

A
  • 3 times a week

* 3-4houra

18
Q

How does kidney dialysis work?

A

-blood passes through a partially permeable membrane

Surrounded by dialysis fluids

Membrane is permeable to ions and waste substances but no big molecules like proteins

19
Q

What is dialysis fluid?

A

Like blood it has the same concentration of dissolved ions and glucose as healthy blood

20
Q

How are products removed from the boood?

A

Diffusion

21
Q

What is the risk with a kidney transplant?

A

It will be rejected

Blood types must be matched - more time

Biology-homeostasis (9 decks)

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