Water and Waste

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Author:
crobertsonx
ID:
78089
Filename:
Water and Waste
Updated:
2011-04-07 12:43:29
Tags:
Water Waste Animal Survival Biology crobertsonx
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Description:
Biology, Subtopic, Animal Survival
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  1. Our bodies gain water by:
    _______ liquids,
    _______ foods,
    _______ _______ which go on inside our cells and which produce water
    • drinking
    • eating
    • chemical reactions
  2. Our bodies lose water by:
    ________,
    ________ out,
    in ______,
    in ______
    • sweating
    • breathing out
    • urine
    • faeces
  3. The kidneys have two functions:
    • to regulate the water content of a mammal,
    • to remove the waste product urea.
  4. Renal Artery
    carries blood into the kidney
  5. Renal Vein
    carries blood out of the kidney
  6. Ureter
    carries urine from the kidney to the bladder
  7. Blood entering the kidney contains useful substances like _______ as well as the waste substances ____.
    • glucose
    • urea
  8. The two main processes which go on in the kidney are:
    1) __________ of the blood
    2) __________ of the useful materials
    • filtration
    • reabsorption
  9. As the processes of filtration and reabsorption take place, _____ is produced.
    urine
  10. Urine contains the waste substance ____
    urea
  11. The ______ is the working unit of the kidney. It's where the processes of ________ and _________ occur.
    • nephron
    • filtration
    • reabsorption
  12. Because the blood vessel leaving the glomerulus is __________ than that entering, pressure builds up in the glomerulus and water containing dissolved glucose and urea are ________ ___ in the ________ _______. This liquid is called _________ _______
    • narrower
    • filtered out
    • bowmans capsule
    • glomerular filtrate
  13. As gloerular filtrate passes down the kidney tubule all of the _______ is reabsorbed into the blood capillaries; some of the ______ is reabsorbed into the blood capillaries; but none of the _____ is reabsorbed.
    • glucose
    • water
    • urea
  14. Urea and some water form ____ which passes into the ________ ____ and then out of the kidney to the bladder via the ______
    • urine
    • collecting duct
    • ureter
  15. Urea is produced when excess proteins are broken down in the ______. The urea is carried from the _____ to the kidneys in the ______
    • Liver
    • Liver
    • Blood
  16. The water content is regulated by the kidneys as a result of a chemical called ___.
    ADH
  17. ADH is a chemical produced in the brain when the water content of the blood is ___ ___.
    too low
  18. ADH is carried to the kidneys by the ______
    blood.
  19. When ADH reaches the kidneys, it makes them _______ ____ water into the blood capillaries surrounding the kidney tubule. This brings the water content of the blood back to ______ and results in a _____ volume of concentrated urine being produced.
    • reabsorb more
    • normal
    • small
  20. If the water content of the blood gets too high, the brain _____ producing ADH. In the kidneys ____ water is reabsorbed into the blood capillaries. This brings the water content of the blood back _____ and results in a _____ volume of dilute urine being produced.
    • stops
    • less
    • normal
    • large
  21. Kidneys can be ______ by accident of disease. If kidney damage goes ________ the concentration of poisonous urea builds up in the body and can kill the person.
    • damaged
    • untreated
  22. Kidney damage can be treated either by replacing the damaged kidney with a ________ kidney or having the persons blood ______ every few days by a kidney machine.
    • replacement
    • purified
  23. Benefits of the Kidney Machine:
    - It _____ a persons life
    - it _____ __ ______ by the body
    • saves
    • cant be rejected
  24. Limitations of the Kidney Machine:
    - The person must spend ____ _______ of time attached to the machine
    - The machine is _______
    • long periods
    • expensive
  25. Benefits of the Replacement Kidney:
    - The person can live a ______ ____
    normal life
  26. Limitations of the Replacement Kidney:
    - The body may ______ the kidney
    - Drugs used to prevent rejection can _____ the persons ______ to _______ ________.
    • reject
    • reduce
    • ability to fight infection.

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