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2 More AS questions, please

Discussion in 'International Dental' started by cheer_up, Nov 29, 2005.

  1. cheer_up

    cheer_up Senior Member
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    1. Tissue fluid reaches the epidermis of the skin

    a. from the surface through the stratum corneum
    b. directly from AV anastomoses
    c. from lymphatic vessels through connective tissue ground substance
    d. directly from capillaries
    e. from capillaries through connective tissue ground substance

    2. Injury of the spinal accessory nerve while in the posterior triangle will cause partial paralyis of the

    a. trapezius
    b. sternocleidomastoid
    c. splenius capitis
     
  2. Toothavenue

    Toothavenue Senior Member
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    Hi Cheer-up..

    This is just a suggestion..instead of starting "so many" new threads on questions every time !!!.!!!!!!!!! :idea: .it will do you and also do other students a whole lot of good if you keep all your doubts and questions in one single thread..and keeping adding to that so that it will be far easier for you and others to refer later..don't u think so?..and many students will be inclined to answer your questions..if you take a look at previous threads ..you can see that most of these q have already been discussed and answered.. :sleep:
    good luck :thumbup:
    ta


     
  3. cheer_up

    cheer_up Senior Member
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    Yeah, that's a good idea. Didn't think of that :D. Thanks
     
  4. fido!

    fido! the ex-***!
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    1.e
    2.not sure
     
  5. dent02

    dent02 Member
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    2.b(sternocleidomastoid)

    pls correct me.
     
  6. cheer_up

    cheer_up Senior Member
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    What confuses me is that both the trapezius and sternocleidomastoid have the SAME double innervation. For both, the motor fibres come from the spinal access nerve, and the the proprioceptive fibres from the cervical plexus C3-C4. So I really don't know which one of the two is the correct answer.
     
  7. dent02

    dent02 Member
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    After innervating the sternocleidomastoid muscle, the spinal accessory nerve emerges and down crosses the posterior cervical triangle to innervate the trapezius

    the question specifies in the posterior triangle,hence sternocleidomastoid.

    pls correct me.
     
  8. mekha

    mekha Senior Member
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    what you explained is true , but when the nerve is cut in the posterior triangle
    sternocliedomastoid muscle retains it supply because the accesory nerve emerging from the jugular foramen innervates the scm before entering the triangle ,then entering the triangle it cross and supply trapezius if it is cut in the post triangle ,trapezius loses its innervation as trapezius is the posterior boundary to the triangle ,partial paralysis is to confuse i suppose

    and if the accesory was cut in anterior triangle loss to scm and trapezius is for sure

    so answer is trapezius 100% sure , lock karo :thumbup:
     
  9. cheer_up

    cheer_up Senior Member
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    Hi

    I agree with you Mekha. I read recently that "after the spinal accesory nerve supplies the sternocleidomastoid, it runs downward and laterally through the posterior triangle to disappear deep to the trapezius and supply that muscle also."

    Thanks for helping me out Mekha, dent02 and prady :D
     
  10. syk

    syk Senior Member
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    Cell bodies of taste fibers from the anterior two-thirds of the tongue are located in which of the following ganglia?

    1. Otic
    2. Geniculate
    3. Submandibular
    4. Pterygopalatine
    5. Trigeminal (semilunar)
    Is it geniculate ?
     
  11. mekha

    mekha Senior Member
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    submandibular
     
  12. cryo

    cryo Junior Member
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    I agree with u, Mekha. :thumbup:
     
  13. syk

    syk Senior Member
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    Hi Mekha,

    Why is it not geniculate?

    The facial nerve contains sensory neurons that originate from the taste buds on the ant 2/3rds of the tongue.The cell bodies of these neurons are located in the geniculate ganglion which lie within the facial canal.

    Please can you expain?
    Thanks,
     
  14. mekha

    mekha Senior Member
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    thank you friend i really really appreciate you ,i made a himalayan blunder here
    ofcourse it is geniculate ganglion ,i just made a rash decision on hearing taste ,thought abt chordatymani and went with submandibular.
    chorda ----submandibular---lingual to sublingual and submand
    thank you again for the eyeopener ,i wont forget this in my lifetime

    ans is geniculate gang
     
  15. mekha

    mekha Senior Member
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    why and how could you agree with me? :thumbup:
     
  16. syk

    syk Senior Member
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    Hi,

    I am sure cryo too was confused as I was.Initially even I answered it as submandibular,it was only second time I did realize the ans was geniculate.
     

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