Biology 3

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  • Created by: kelz0209
  • Created on: 15-04-14 12:31
What is a nephron?
Part of the kidney, where the blood is filtered and purified.
1 of 9
Explain what happens if a person's kidneys don't work properly.
Waste substances build up in the blood and that person will lose their ability to control the levels of ions and water in their body. It could result in death.
2 of 9
Roughly how often does kidney dialysis have to be carried out?
About three times a week.
3 of 9
Give two precautions that are taken to prevent the rejection of a transplanted kidney.
A donor with a tissue type that closely matches the patient is chosen. The patient is treated with drugs that suppress the immune system.
4 of 9
The table shows the concentrations of some different substances in the fluid inside a nephron of a kidney- in the Bowman's capsule, and in the collecting duct. Explain why the liquid in the Bowman's capsule does not contain any proteins.
The membranes between the blood and the capsule act like filters, and the protein molecules are too big to fit through.
5 of 9
Mary has kidney failure. She has dialysis three times a week. Explain how the dialysis machine removes urea from Mary's blood.
The urea diffuses out through the dialysis membrane, because the concentration of urea in the blood is more than in the dialysis fluid/because the dialysis fluid contains no urea.
6 of 9
Explain why Mary does not lose glucose from her blood during dialysis.
The dialysis fluid contains the same concentration of glucose as healthy blood, so there is no concentration gradient and no net movement of glucose.
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Mary is hoping that she will soon have a kidney transplant. Suggest one reason why this form of treatment may be preferable to dialysis.
She will not have dialysis sessions three times every week for hours each time.
8 of 9
One disadvantage of a kidney transplant is that the donor kidney can be rejected by the body.Explain why this is.
Because the foreign antigens(on the kidney donor) can be attacked by the patient's antibodies.
9 of 9

Other cards in this set

Card 2

Front

Explain what happens if a person's kidneys don't work properly.

Back

Waste substances build up in the blood and that person will lose their ability to control the levels of ions and water in their body. It could result in death.

Card 3

Front

Roughly how often does kidney dialysis have to be carried out?

Back

Preview of the front of card 3

Card 4

Front

Give two precautions that are taken to prevent the rejection of a transplanted kidney.

Back

Preview of the front of card 4

Card 5

Front

The table shows the concentrations of some different substances in the fluid inside a nephron of a kidney- in the Bowman's capsule, and in the collecting duct. Explain why the liquid in the Bowman's capsule does not contain any proteins.

Back

Preview of the front of card 5
View more cards

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