Removal of Waste and Water Control Flashcards
What do the waste products removed by the body include?
Carbon dioxide and urea
Urea is produced by…
The breakdown of amino acids
Where is urea produced? Where is it removed?
Produced in the liver, removed via the kidneys (stored in bladder)
What process produces CO2?
Respiration
How is CO2 removed?
Via the lungs when we breathe out
What happens if the water or ion content of the body is wrong?
Too much water may move into or out of our cells and damage them
When do water and ions enter the body?
When we eat and drink
How does a healthy kidney produce urine? 5
First it filters the blood, reabsorbs sugar, reabsorbs dissolved ions needed by the body, reabsorbs as much water as the body needs, releases urea and excess ions and water as urine
How can people who suffer from kidney failure be treated?
Kidney dialysis or having a healthy kidney transplanted
In a dialysis machine, where does a patient’s blood flow between?
Partially permeable membranes
What does dialysis fluid contain the same concentration of that the blood does? What does this ensure?
Useful substances, ensuring that glucose and useful mineral ions aren’t lost
What happens to urea in dialysis?
It passes out of the blood into the dialysis fluid
What does dialysis restore?
The concentrations of dissolved substances in the blood to normal levels
Dialysis has to be carried out at…
Regular intervals
What happens in a kidney transplant?
A diseased kidney is replaced with a healthy one from a donor
