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  1. #1
    monterusca is offline Newbie
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    Tonsil Embriology

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    The embryologic origing of the Tonsillar Lymphatic Tissue is :

    A. Third Pharyngeal Pouch
    B. Second Pharyngeal Pouch
    C. Third Pharyngeal Arch
    D. Second Pharyngeal Arch
    Go ahead, everything is possible for the one who believes.

  2. #2
    mmw
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    my answer is 2nd pharyngeal pouch(B)

  3. #3
    Roxanita is offline Senior Member
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    2nd pharyngeal pouch

    HEAD AND NECK
    THE PHARYNGEAL POUCHES


    1st pharyngeal pouch forms the tubotympanic recess.

    2nd pharyngeal pouch forms the palatine tonsils. Part of the pouch remains in the adult as the tonsillar fossa.

    3rd pharyngeal pouch forms inferior parathyroid and thymus.

    4th pharyngeal pouch forms the superior parathyroid.and ultimobranchial body that gives rise to the parafollicular cells that secrete calcitonin.


    http://www1.umn.edu/dental/courses/d.../handout1.html
    http://cats.med.uvm.edu/cats_teachin...es/pouches.dcr

  4. #4
    monterusca is offline Newbie
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    That's correct

    second pharyngeal pouch is right
    Go ahead, everything is possible for the one who believes.

  5. #5
    krishna reddy's Avatar
    krishna reddy is offline Newbie 510 points
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    yes answer is 2nd pouch
    krishna reddy_Hidden Content

  6. #6
    wolf's Avatar
    wolf is offline Newbie 510 points
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    the second pouch forms just the tonsilar fossa where the tonsils should develop. the tonsils itself develop from mesoderm, I think...

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