1. The SDN iPhone App is back and free through November! Get it today and please post a review on the App Store!
    Dismiss Notice
  2. Dismiss Notice
  3. Guest, be sure to check out How To Get Into Dental School, our free downloadable PDF with step-by-step details for dental school applicants!
    Dismiss Notice
  4. Dismiss Notice
Dismiss Notice

Interview Feedback: Visit Interview Feedback to view and submit interview information.

Interviewing Masterclass: Free masterclass on interviewing from SDN and Medical College of Georgia

allantois v chorion

Discussion in 'DAT Discussions' started by AASDDS1, Jul 27, 2011.

  1. AASDDS1

    2+ Year Member

    Joined:
    Sep 24, 2009
    Messages:
    89
    Likes Received:
    0
    Status:
    Pre-Dental
    a lot of questions will ask to id the extraembryonic membrane based on a description, specifically, "which membrane serves in gas exchange"..

    both the chorion and allantois exchange gas between the embryo, and sometimes then answer will be one or the other. is there one that is dominant in the gas exchange role? unless the question lists other functions of the membrane, not sure how i would be able to tell..
     
  2. Note: SDN Members do not see this ad.

  3. Bis-GMA111

    7+ Year Member

    Joined:
    Nov 7, 2010
    Messages:
    1,974
    Likes Received:
    124
    Status:
    Dentist
    gas exchange=chorion. wastes=allantois
     
  4. wired202808

    wired202808 Membership Revoked
    Removed 5+ Year Member

    Joined:
    Aug 14, 2006
    Messages:
    2,463
    Likes Received:
    9
    be careful here, chorion turns into the placenta and helps to transfer nutrients
    but allantois does both wastes (nitrogenous) AND gas exchange

    see wikipedia as a source, i also believe this question was asked in the destroyer or elsewhere but allantois actually has 2 functions.
     
  5. jp313

    7+ Year Member

    Joined:
    Mar 27, 2011
    Messages:
    23
    Likes Received:
    1
    Status:
    Pre-Dental
    Allantois can be used as nitrogenous waste and as a gas exchange as well because the vessel of this structure lie close enough to the surface of the cell which allows gas exchange
     

Share This Page