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1999 + 2002 Anat. questions..Please help

Discussion in 'International Dental' started by cheer_up, Nov 20, 2005.

  1. cheer_up

    cheer_up Senior Member
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    From 1999:
    56. Each of the following is a function of an adult spleen, EXCEPT one. Which is this one?

    b) Production of erythrocytes (I think)
    c) Storage of red blood cells

    From 2002:
    45. Ulcers of recurrent herpes occur on masticatory mucosa. Herpetic ulcers could occur in which of the following locations?

    a) Buccal mucosa
    b) Labial mucosa (I think)
    c) Hard palate mucosa
    d) Mucosa of the soft palate
    e) Mucosa of the floor of the mouth

    56. Which of the following arteries is usually the most inferior branch arising from the external carotid artery?

    a) Superficial temporal
    b) Posterior auricular
    c) Superior thyroid
    d) Maxillary
    e) Lingual

    92. The mature dental pulp is composed of primarily of which of the following connective tissue?

    a) Dense
    b) Loose (I think)
    c) Mucoid
    d) Adipose
    e) Elastic

    Thanks a lot in advance :)
     
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  3. fido!

    fido! the ex-***!
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    56.sup thyroid,i think!correct me if i'm wrong!
     
  4. doc_mi

    doc_mi Junior Member
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    ans-1999--56-b
    2002--45-b
    56-c
    92-a
    correct me if i am wrong.
     
  5. ridge

    ridge Senior Member
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  6. mekha

    mekha Senior Member
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    hi,


    99 /56) adult spleen does not produce erythrocytes .in fetus spleen produce
    rbc
     
  7. fido!

    fido! the ex-***!
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    hi ridge,
    i guess u r wrong,as superficial temporary is the most superior branch of ECA!correct me if i'm wrong!
     
  8. ridge

    ridge Senior Member
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  9. fido!

    fido! the ex-***!
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    i'm sorry,ridge!
     
  10. mekha

    mekha Senior Member
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  11. fido!

    fido! the ex-***!
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    HI MEKHA
    U R RIGHT!THE QUESTION STATES EXCEPTION
     
  12. mekha

    mekha Senior Member
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    thanks prady

    how abt pulp is it dense when mature,i thought it was loose areolar

    thanks in advance
     
  13. cheer_up

    cheer_up Senior Member
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    Hi guys

    Thanks a lot for your answers. Really appreciate your help. But I'm confused as to what is the answer for the most inferior branch of the ECA....is it a) or c)?
     
  14. cheer_up

    cheer_up Senior Member
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  15. mekha

    mekha Senior Member
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  16. mekha

    mekha Senior Member
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  17. cheer_up

    cheer_up Senior Member
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  18. cheer_up

    cheer_up Senior Member
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  19. fido!

    fido! the ex-***!
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    thanks!
     
  20. mekha

    mekha Senior Member
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  21. styloid

    styloid Senior Member
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    56. Which of the following arteries is usually the most inferior branch arising from the external carotid artery?

    a) Superficial temporal
    b) Posterior auricular
    c) Superior thyroid
    d) Maxillary
    e) Lingual

    here i guess the answer is ---- sup thyroid but what if there was one more option of --ascending pharyngeal included then what would be the answer.???????????
     
  22. ridge

    ridge Senior Member
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  23. cheer_up

    cheer_up Senior Member
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  24. mekha

    mekha Senior Member
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    left rec laryngeal pass beneath
    a)lig arteriosum
    b)left sup intercostal vein

    left recurrent laryngeal nerve orginate from left vagus nerve it pass over the arch of the aorta inferior to left superior intercostal vein. It goes medially and posteriorly deep to ligamentum arteriosum before curving inferior to the arch of the aorta. It then passes superiorly over the left main bronchus to ascend in the groove between the left side of the trachea and the ant of the esophagus.


    so what could the ans be lig ateriosum or lft sup intercostal v?

    2)primary elevator of mandible except one ,exception
    mylohyoid
    lat pterygoid
    temporalis

    is the answer mylohyoid
     
  25. fido!

    fido! the ex-***!
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    1.the l rec.lar.n passes over the arch of the aorta,curves around the lig.arteriosum & goes into the groove b/w trachea & oesophagus!ans is l.rec.lar.n
    2.exception is lat.pterygoid!lat pterygoid opens and protrudes the mouth!
    hope this helps!
     
  26. mekha

    mekha Senior Member
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    left recurrent laryngeal goes beneath the left sup intercostal first and
    around (hooks) lig arteriosum,


    relation of left rec laryngeal to lig arteriosum is posterior and medial first and then it hooks

    relation of left recurrent laryngeal is inferior to left sup intercostal v

    i thought inferior was beneath ,so intercostal as a probable answer



    and abt lateral pterygoid in jeferry okeseon it says sup head of lateral pterygoid helps in chewing(power stroke) and mylohyoid just opening only ,



    http://www.thetmjdoctor.com/skullmovie/uprightnormal.html

    4 th paragraph in this site says too


    All the fibres of the inferior head are attached to the anterior suface of the neck of the condyle. Hence, contraction of the inferior head pulls the condyle forwards and downwards, protruding the mandible. Some fibres of the superior head are inserted into the anteromedial aspect of the capsule and disc (Carpentier et al., 1988). Contraction of the superior head thus pulls both the disc and the condyle forwards. Since its origin is above the condyle, it also assists slightly in elevation (Koolstra and van Eijden, 1995) .


    i know mylohyoid ,which is from mylohyoid line to hyoid muscle has only opening action

    i dont know what to consider as answers for these questions.now i really have anterior open bite with posterior gagging :eek:
     
  27. styloid

    styloid Senior Member
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  28. mekha

    mekha Senior Member
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    hi ,
    i think the answer is asc pharyngeal , which comes in the bifurcation ,i am not sure but
     
  29. mekha

    mekha Senior Member
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    any explanations for these doubts ?
     
  30. mam6701e

    mam6701e Senior Member
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  31. cheer_up

    cheer_up Senior Member
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    I get quite confused about this question. All of the options are elevators of the mandible EXCEPT mylohoid ( which depresses the mandible when the hyoid is fixed) and also the lateral pterygoid which also depresses the mandible. So why is the answer lateral pterygoid and not mylohyoid or both (which of course is not an option)?
     
  32. mekha

    mekha Senior Member
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    i dont remember which qp this qusetion comes
    about cutaneous innervation to chin is mediated by
    inf alveolar
    mentaL

    i know its mental but when they say mediated ,does that mean inf alveolar the main branch ? :confused:
     
  33. styloid

    styloid Senior Member
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    Lateral Pterygoid Muscle


    From an anatomic viewpoint, the lateral pterygoid is generally described as one muscle arising from two distinct heads. From a functional viewpoint, however, the lateral pterygoid consists of two separate muscles: the inferior lateral pterygoid and the superior lateral pterygoid.

    The larger inferior lateral pterygoid (ILP) originates from the outer surface of the lateral pterygoid plate of the sphenoid bone and runs backward, upward, and laterally to insert on the anterior surface of the neck of the condyle. The smaller superior lateral pterygoid (SLP) arises from the greater wing of the sphenoid and fuses with the inferior belly near its point of insertion. Fibers from both bellies insert into the neck of the mandibular condyle. Some researches believe that a small, variable number of fibers from the superior belly also insert on the anteromedial border of the articular disc. Other researchers were unable to demonstrate a direct attachment to the disc, but were able to show a connection to the anterior aspect of the TMJ capsule. This connection increases the possibility that the SLP may influence disc movements without inserting directly on the disc. Despite the lack of consensus about the structural organization of the SLP, this text will assume that the SLP does have a role in anteroposterior movements of the articular disc during joint function.

    Studies have shown that the two heads of the lateral pterygoid function as independent and antagonistic muscles. During mandibular opening and protrusion, contraction of the ILP pulls the condyle forward down the articular eminence. In contrast, the SLP is active during mandibular closure and contracts in conjunction with the mandibular elevator muscles.

    The SLP exerts a holding or bracing action on the condyle when the teeth are held together and during power strokes. A power stroke occurs during forceful mandibular closing, especially during chewing or during clenching the teeth. The SLP also acts to rotate the disc anteriorly on the condyle when the disc condyle complex is moving upward and backward against the eminence. By keeping the disc between the condyle and eminence, the SLP helps to maintain joint stability.

    may be this can clear a few doubts .
     
  34. mekha

    mekha Senior Member
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    so is the muscle which is not primary elevator is mylohyoid?

    thanks in advance
     
  35. doc2006

    doc2006 Member
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    hello everyone,
    i have some correction in 2000 and 2002 papers..anatomy part

    2002 paper..
    1-B , 29-B ,48-?,82- D, 83-B ,92-B ,87-D,99-D

    2000 paper...
    3-D,4-A, 39-A,40-B, 47-?,48-C/D, 49-?, 100-A


    pls correct me if im wrong...my exam is in 3 days ..so pls give corrections as soon as possibles...thanks in advance.....
     
  36. styloid

    styloid Senior Member
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    the answer is mylohyoid
     

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