Need some biology help please!

  1. i'm trying to understand something, and the correspondence text doesnt seem to be giving me enough info to answer a question!

    Can someone please help me (direct me to resources) answer the question:

    "Think about the respiratory difficulties faced by a person with fibrosis or emphysema, How would the loss of elasticity affect breathing?"

    I already have a general answer, but I need to elaborate more, and I cant do that until I understand it more clearly.

    Please please help!!
    Thanks!
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  2. 5 Comments

  3. by   Achoo!
    Look at this where it talks about the recoil.

    http://www.mhhe.com/biosci/esp/2002_...sp/default.htm


    As recoil decreases, air becomes trapped in the lungs at the end of exhalation. Does that help at all??
  4. by   Hellllllo Nurse
    I found the Merck site to be an invaluable resource for care-plans. Here is a link specific to COPD:

    http://www.merck.com/mrkshared/mmanu...pter68/68c.jsp
  5. by   michellemybelle
    FutureNurse2005,

    Found some resources for you that will hopefully help.

    Mayo Clinic: http://www.mayoclinic.com/invoke.cfm...709FFA1BF33DF7

    Web MD: http://my.webmd.com/hw/health_guide_...avbar=hw188550

    As far as that question goes, it seems pretty vague. CF causes lung mucus to thicken, and actually impairs its ability to cleanse the lungs of dirt/bacteria. Emphysema destroys the alveoli in the lungs and decreases their capacity for air. Flexibility, I guess is impaired in CF since the mucus is not viscous and cannot sweep the dirt/mucus away and remains inflexible, accumulating in the lungs. But, in emphysema...I'm not sure on how it impairs flexibility...all I know is that it causes major shortness of breath.

    Hope this helps!

    -Michelle
  6. by   FutureNurse2005
    thank you all so much!!!!! :hatparty: :hatparty: :hatparty:
  7. by   Speculating
    Quote from FutureNurse2005
    i'm trying to understand something, and the correspondence text doesnt seem to be giving me enough info to answer a question!

    Can someone please help me (direct me to resources) answer the question:

    "Think about the respiratory difficulties faced by a person with fibrosis or emphysema, How would the loss of elasticity affect breathing?"

    I already have a general answer, but I need to elaborate more, and I cant do that until I understand it more clearly.

    Please please help!!
    Thanks!
    FutureNurse2005, Think about your lungs as a balloons. Blow them up no problem. Then give them a little squeeze (a little pressue) and the air comes out - no problem. Now, think about your lungs turning into say tin cans (we'll call that emphysema) blow them up. It becomes a little difficult. Now, try to get the air to come out of those tin cans give them a little squeeze or try a little pressure to the out sides of the cans - even with that the air isn't coming out very easily is it.

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