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Anatomy & Micro Questions?? Pls Help

Discussion in 'International Dental' started by Rossu, Nov 28, 2005.

  1. Rossu

    Rossu Smile Maker
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    Hi, I am trying to find the answers for the following questions. I have checked a bunch of books but no luck. Please help me if you know the answers. Thanks :confused:

    Which head of lateral pterygoid muscle inserts into articular disc of TMJ?
    a. Upper (small) Head (I think this is the right answer)
    b. Lower (large) Head

    Which organism forms Y or H shaped colonies in culture media?
    Don’t know any options
     
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  3. reet

    reet Member
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    ans is a



    reet
     
  4. cheer_up

    cheer_up Senior Member
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    Answer is A
     
  5. Rossu

    Rossu Smile Maker
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    Does anybody know answer for second question, which is:
    Which organism forms Y or H shaped colonies in culture media?
     
  6. HuyetKiem

    HuyetKiem Senior Member
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    Is it Actinomyces israelii ? forms a molar tooth-shaped colonies.
     
  7. praveena

    praveena Junior Member
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    cigarette smoking can b linked to each of the following cancers except...

    a)larynx
    b)stomach
    c)pancreas
    d)esophagus
    e)urinary bladder

    'm toying between c and e....but i find sites that say smoking can cause all of the above cancers...
    pls help.
     
  8. mekha

    mekha Senior Member
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    actually this question is absurd
    considereing all choices, i would go for stomach.(pancreas exclusion being a gland) (me between b and e)

    stomach has high cell turn over and gets replinished too ,we sometimes take smoked food too .......

    what is everyones opinion on this question?
     
  9. digo

    digo Junior Member
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    ..
     
    #8 digo, Dec 1, 2005
    Last edited: Apr 5, 2012
  10. mekha

    mekha Senior Member
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    i found this online so voted against pancreas,i am not sure of the answer but

    "Smoking has been identified as the single most significant independent risk factor associated with familial pancreatic carcinoma.
     
  11. praveena

    praveena Junior Member
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    which of the following best describes pts who develop meningitis following mumps,coxsackie or echo virus infections?

    a sensitivity to viral toxins
    b experience mortality rate of 75%
    c rarely dev permanent neural damage
    d subject to exacerbations once latent virus is activated
    e most often initially infected by blood containing virus

    any ideas??
     
  12. dent02

    dent02 Member
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    ans.c

    pls correct me
     
  13. praveena

    praveena Junior Member
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    i have no clue which ones right...i know mumps and ECHO cause aseptic meningitis.
     
  14. 203179sh

    203179sh Leoyao

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    a. Upper (small) Head
     
  15. drarch

    drarch Member
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    coxsackie cause degeneration of brain & other tissues. so i think ans would be a

    i may be wrong,pls coorect me.
     
  16. drarch

    drarch Member
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    which is the most common site of metastasis of bronchogenic carcinoma.
    which one is the commonest type (adenocarcinoma/sq cell carcinoma).
    kaplan says its adeno & decks says it is sq.
    plz tell me the ans as i searched in net but some site say adeno& some says sq.
     
  17. praveena

    praveena Junior Member
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    most common site os metastasis is bone.
     
  18. mekha

    mekha Senior Member
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    squamous cell c :thumbup:
     
  19. praveena

    praveena Junior Member
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    which of the foll substances r considered to b chem mediators for vascular dilatation at initial phase of acute inflammation
    a seratonin
    b histamine
    c bradykinin
    d hyaluronidase

    ans has been given as a b and c.but doesnt seratonin cause vasoconstriction????
     
  20. mekha

    mekha Senior Member
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  21. praveena

    praveena Junior Member
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  22. praveena

    praveena Junior Member
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    bacterial lipopolysaccharide contains each of the foll except

    a lipid A
    b techoic acid
    c core polysaccharide
    d o specific side chain
    e keto deoxy octanoate

    ?????????
     
  23. mekha

    mekha Senior Member
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    techoic acid/100% sure
     
  24. praveena

    praveena Junior Member
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    thanks i thot so too...but was a lil unsure abt the choice

    a few more....

    1.a bone lesion with radioopaque structures radiating from the periphery suggests...

    a osteosarcoma
    b osteoblastoma
    c multiple myeloma
    d giant cell tumor
    e osteitis deformans

    2.prevotella intermedia is first detectable in the oral cavity

    a at birth
    b by adolescence
    c in the presence of dental caries
    d immediately b4 periodontal disease
    e long after pdl disease disappeares
     
  25. praveena

    praveena Junior Member
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    one more....

    which of the following represents classic microscopic lesion of rheumatoid arthiritis

    a topus
    b pannus
    c aschoff bodies
    d heberden node
    e wire loop lesion


    the key says b but y not c???
     
  26. praveena

    praveena Junior Member
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    sorry guess i got carried away...
    the answers obviously pannus.
     
  27. Rossu

    Rossu Smile Maker
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    Reduced renal blood flow can cause hypertension by which of the following?
    1. Release of renin
    2. Reflex vasoconstriction
    3. Retention of potassium in blood
    4. Increased output of epinephrine
     
  28. Rossu

    Rossu Smile Maker
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    Reduced renal blood flow can cause hypertension by which of the following?
    1. Release of renin
    2. Reflex vasoconstriction
    3. Retention of potassium in blood
    4. Increased output of epinephrine
     
  29. praveena

    praveena Junior Member
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    ans.1 release of renin
     
  30. drarch

    drarch Member
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    Thanx praveena& mekha
     
  31. Rossu

    Rossu Smile Maker
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    1_ osteosarcoma :
    2_it is present in normal flora of mouth,so ans shd be at birth but i read that mouth acquires adult type of flora at the end of 1 yr.[ correctme plz]
     
  32. mekha

    mekha Senior Member
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    1)sun ray appearance ,osteosarc thats what they r askin
    2 answer is adolesence,prevotella intermedia previously known as Bacteroides melaninogenicus subsp. intermedius) appears only in adolesence
     
  33. styloid

    styloid Senior Member
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    just for information i would lke to add the following----

    RENOVASCULAR HYPERTENSION -----is a secondary form of high blood pressure caused by a narrowing of the renal artery.
    --Renal hypertension is the most common form of secondary hypertension
    --There are two forms of renovascular hypertension--
    1- atherosclerotic renovascular hypertension ---deposits narrow the artery, disrupting blood flow seen with men .
    2-Renovascular hypertension caused by fibromuscular dysplasia In fibromuscular dysplasia, cells from the artery wall overgrow and cause a narrowing of the artery channel.seen with women

    Narrowing of the renal artery reduces the flow of blood to the kidney,the kidney produces the protein renin. Renin is released into the blood stream. Through a series of steps, renin is converted into an enzyme that causes sodium (salt) retention and constriction of the arterioles. In addition to atherosclerotic and fibromuscular dysplasia, narrowing of the renal artery can be caused by compression from an injury or tumor, or by blood clots.
     
  34. styloid

    styloid Senior Member
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    1- osteosarcoma
    2-Prevotella intermedia is an obligatory anaerobe, black-pigmented, gram-negative rod that is frequently associated with periodontal disease: adult periodontitis, acute necrotizing ulcerative gingivitis, and pregnancy gingivitis. This organism is also involved in extraoral infections such as nasopharyngeal infection and intra-abdominal infection .It is found in plaque .

    i guess the answer here is ----d-immediately b4 periodontal disease.
    correct me if i am wrong.
     
  35. mekha

    mekha Senior Member
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    answers wrong


    puberty is the ans
    bacteriodes include prevotella intermedia sub class
    :thumbup:
     
  36. bha2005

    bha2005 New Member
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    i think the most common type is sq. cell ca. pls. correct me if i'm wrong. :)
     
  37. mekha

    mekha Senior Member
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    u r right
     
  38. styloid

    styloid Senior Member
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    hi mekha ,can u give some references u look very confident abt ur answer!!!!!!!
     
  39. mekha

    mekha Senior Member
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    ans -puberty

    hey friend i cant give u the content which has copyright issues , search for it and you find it .
    strept salivarius dominates(98%) -0 to 6 months
    then mutants and sanguis in 6to 9months depending on tooth eruption because it needs gingival crevice
    infants oral flora is similar to the mother .

    bacteriodes and spirochetes comes late in life in puberty (teenage).prevotella was considered a subclass of bacteriodes melaninogenicus ,now known as prevotella intermedia .

    I double checked ,prevotella is seen in eop(early onset peridontitis) and adult peridodontitis ,true , ,if we want to isolate it u have to go to a pathological site in the body , just to prove these r normal habitats in mucosal surface i am quoting this from a reputed site .


    Anaerobes that are part of the indigenous flora of the oral cavity can be recovered from various infections adjacent to that area, such as infectious cervical lymphadenitis,subcutaneous abscesses and infected burns in proximity to the oral cavity; infected human and animal bites paronychia; tonsillar and retropharyngeal abscesses chronic sinus infection. chronic otitis media; periodontal abscess ,infectious thyroiditis. aspiration pneumonia,empyema and bacteremia associated with one of the above infections.The predominant anaerobes recovered from these infections are species of anaerobic gram-negative bacilli (including pigmented Prevotella and Porphyromonas , Prevotella oralis and other Prevotella species, and Fusobacterium ) and gram-positive anaerobic cocci ( Peptostreptococcus species), which are all part of the normal flora of the mucosal surfaces of the oral, pharyngeal, and sinus cavities .

    as u said " if it is immediately before periodontal disease " ,imagine just before periodontal patho, prevotella comes and camps and cause this!!,where does prevotella come from then?

    so u decide which is good for you!!!
    :thumbup:
     
  40. toothcol

    toothcol Member
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    I agree with Mekha, since prevotella is a characteristical microorganism of juvenile-puberty periodontitis.
     
  41. Rossu

    Rossu Smile Maker
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    The exception is urinary bladder.In Kaplan it is written that smoking causes carcinoma of Pancreas.This ques came in exam Dec 5.n I wrote pancreas just by reading ur discussion but it is wrong
     
  42. Rossu

    Rossu Smile Maker
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    The exception is urinary bladder.In Kaplan it is written that smoking causes carcinoma of Pancreas.This ques came in exam Dec 5.n I wrote pancreas just by reading ur discussion but it is wrong
     
  43. drarch

    drarch Member
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    ans for this is stomach. as in kaplan smoking is one of the reason of bladder carcinoma.
     
  44. mekha

    mekha Senior Member
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    can u specify which page or which portion it comes ,i couldnt find it , i thought too it was stomach , but never found in kaplan
    help me here

    thank you
     
  45. drarch

    drarch Member
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    yes u r right for stomach it is not written . i read in decks which says that all other options r related to smoking except the stomach.so thats why i said it is a stomach.
     
  46. mekha

    mekha Senior Member
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    as far as i know stomach has the highest turn over rate (replinishing capacity)

    so i thought it wont be , well stomach and urinary bladder seems so narrow i would go for stomach .


    another doubt which cause the highest mortality in peptic ulcer ?
    is it bleeding or perforation

    do u know whats the answer
    help me out
    thanks
     
  47. pendejodo

    pendejodo Senior Member
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    hello new question let me thinking came in my last board pat sect. which is the firts concert in a pt who is quadroplegy after two hour in the dental chair choices were very weir: spasticity , orinary incontenence ,blood circulation,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,let me kwon what do you thing and why?
     
  48. Dent tex

    Dent tex Member
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    1) a
    2) B

    correct me if Iam wrong.

     
  49. Rossu

    Rossu Smile Maker
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    I think it is perforation
     
  50. Rossu

    Rossu Smile Maker
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    thanks for correction,Actually smoking causes gastritis.
     
  51. drarch

    drarch Member
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    in peptic ulcer . death is more bec of perforation than bleeding.
     

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