Lets discuss questions of NBDE 1

[d dimps]

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1). .Which angle does a P Wave makes on ECG?
a). .45 degree
b). .180 degree
c). .0 degree
d). .-45 degree
e). .-180 degree.

2). .What is endogenous cholesterol? Most endogenous cholesterol is converted to?
a). .Glucose
b). .Cholic acid
c). .Steroid
d). .Oxaloacetete
e). .Ketone bodies

3). .Which of the following statement is correct regarding Glioblastoma multiforme?
a). .the tumor is most common before puberty
b). .it is classified as a type of meningioma
c). .it is most common type of Astrocytoma.
d). .Its prognosis is generally more favourablethan Grade 1 astrocytoma.
e). .It is derived from the epithelial lining of ventricles

4). .Which of the following pathological changes is irreversible?
a). .fatty changes in liver cells
b). .karyolysis in myocardial cells
c). .glycogen deposition in hepatocyte nuclei
d). .hydropic vacuolization of renal tubular epithelial cells.

5). .An example of Synergism is the effect of?
a). .insulin and glucagon on blood glucose
b). .estrogen and progesterone on uterine motility
c). .growth hormone and thyroxine on skeletal growth.
d). .Antidiuretic hormone and aldosterone on potassium excretion.

 

[Anaita]

Hey Anaita...Long time. Hows the prep going or are you already done with the exam?

Hey!! i too was wondering as to where have you been??? exam date scheduled???
Nice seeing you 🙂🙂
Exam scheduled for June

 

[aiming 4 dds]

1. Which of the following describes an example of innate immunity ?
a. An allergic reaction to insect venom
b. The classical pathway of complement
c. The destruction of virus-infected cells by T-killer cells
d. The production lgG in response to insect venom
e. The alternative pathway of complement

 

[Anaita]

1. Which of the following describes an example of innate immunity ?
a. An allergic reaction to insect venom
b. The classical pathway of complement
c. The destruction of virus-infected cells by T-killer cells
d. The production lgG in response to insect venom
e. The alternative pathway of complement

Hey!! this question has been answered earlier in this forum and it does kinda get u stumped, the answer is the alternate pathway of complement
Cant be A)... will require sensitization followed by Ig E response;
B)....requires the Classical GM pathway.. IgG/IgM
C) and D) the other two are explanatory!

 

[Being human]

I still cant understand how could the answer be the alternate pathway coz it is also part of the innate immune system..i feel there is some problem in the question itself..For me the options A and D are part of the acquired immunity and the remaining that is complement and natural killer cells are part of innate..so how can we choose an answer...kindly explain

 

[Anaita]

I still cant understand how could the answer be the alternate pathway coz it is also part of the innate immune system..i feel there is some problem in the question itself..For me the options A and D are part of the acquired immunity and the remaining that is complement and natural killer cells are part of innate..so how can we choose an answer...kindly explain

In the question the T killer cells mentioned are the cytotoxic CD8 cells... not the NK cells.. atleast that's the way i understood it and Classical pathway requires activation by IgG/Ig M. Alternate pathway which is part of innate immunity...

 

[Being human]

it mentioned t killer cells and natural killer cells are also part of the t cell but they belong to the innate immunity...why would it have mentioned t killer cells then..it could mention cytotoxix or supresspr which is more commonly used to refer to cd8 cells...and regarding the classical pathway i agree it requires IgG/IgM for its activation but even alternate pathway can also be activated by IgG/IgA or E but this activation is less efficient for the alternate..it is more efficiently activated by endotoxins from gm negative bacteria...in the end I just feel that natural killer cells is the answer but then since even alternate and classical are also mentioned i cannot decide between the 3....anyway that is my train of thought..i am more for the natural killer cells as it mentions the exact word to word action of what it does in the option...the other options are a bit confusing

 

[perfectionist1]

Hey!! i too was wondering as to where have you been??? exam date scheduled???
Nice seeing you 🙂🙂
Exam scheduled for June

Hey Anaita...Iam yet to schedule my exam...was kinda out of the system lately.🙁 Need to get back in...Good to see u after a long time. How is your prep going on? Goodluck for June.👍

 

[Anaita]

Hey Anaita...Iam yet to schedule my exam...was kinda out of the system lately.🙁 Need to get back in...Good to see u after a long time. How is your prep going on? Goodluck for June.👍

Dont stress out annie!! dont delay your exams so much... u knew a lot even in September....

 

[dentist03jo]

can anyone help me with this question please?

clinical examination reveals that the lingual cusp of the tooth #5 is broken off,this is most likely to which of the following mandibular movement during trauma?
the answer is left mesitrusive.
please explain?

thank you.

 

[Anaita]

can anyone help me with this question please?

clinical examination reveals that the lingual cusp of the tooth #5 is broken off,this is most likely to which of the following mandibular movement during trauma?
the answer is left mesitrusive.
please explain?

thank you.

On the balancing side there can be no contacts during tooth movement since condyle moves forward, mesial and down the articular movements.... so that rules out right side balancing movements.... that leaves us with right laterotrusive/left mesiotrusive movements wherein( we could have a canine protected or group functon occlusion) th mandibular cusps move through the supporting cusps of the maxillary teeth ie lingual cusps of maxillary teeth followed by movement thru embrassures
So the answer would be rt laterotrusive or left mesiotrusive movements......correct me if i'm wrong... do refer to Okeson

 

[dentist03jo]

On the balancing side there can be no contacts during tooth movement since condyle moves forward, mesial and down the articular movements.... so that rules out right side balancing movements.... that leaves us with right laterotrusive/left mesiotrusive movements wherein( we could have a canine protected or group functon occlusion) th mandibular cusps move through the supporting cusps of the maxillary teeth ie lingual cusps of maxillary teeth followed by movement thru embrassures
So the answer would be rt laterotrusive or left mesiotrusive movements......correct me if i'm wrong... do refer to Okeson

yes,,you are right.
thank you for the explanation..

 

[aiming 4 dds]

Hey!! this question has been answered earlier in this forum and it does kinda get u stumped, the answer is the alternate pathway of complement
Cant be A)... will require sensitization followed by Ig E response;
B)....requires the Classical GM pathway.. IgG/IgM
C) and D) the other two are explanatory!

Thanx for explanation.........Keep it up 👍

 

[Anaita]

Thanx for explanation.........Keep it up 👍

Thanx...🙂

 

[buntydr83]

can eny one tell me what is the position of mandibular foramen
1. above
2. below
the occlusal plane of mandible....

it's given above in ASDA paper and below in DECKS.....

 

[dentdoc10]

can eny one tell me what is the position of mandibular foramen
1. above
2. below
the occlusal plane of mandible....

it's given above in ASDA paper and below in DECKS.....

Mandibular foramen is @ the level of or slightly above the occlusal plane of the mandible in adults and slightly below the occlusal plane in children.

 

[Anaita]

can eny one tell me what is the position of mandibular foramen
1. above
2. below
the occlusal plane of mandible....

it's given above in ASDA paper and below in DECKS.....

There are times one should leave aside what MCQ books say and remember what we were repeatedly told and learnt when giving an inf alveolar N block in dental college...🙂

 

[Juccy]

Hi everyone, I have a question about this ASDA 79 released question


The immediate type of hypersensitivity in which histamine does NOT play a major role is

asthma.
urticaria.
anaphylaxis.
Arthus reaction.

They say it is Arthus reaction. But how could it be when Arthus is type 3!
Any ideas? Please share

 

[doc76]

Hi everyone, I have a question about this ASDA 79 released question


The immediate type of hypersensitivity in which histamine does NOT play a major role is

asthma.
urticaria.
anaphylaxis.
Arthus reaction.

They say it is Arthus reaction. But how could it be when Arthus is type 3!
Any ideas? Please share

Hope this helps
A form of immediate hypersensitivity resulting in erythema, oedema, haemorrhage, and necrosis observed in rabbits after injection of antigen to which the animal has already been sensitised and has specific IgG antibodies. The reaction is caused by the inflammation that results from the deposition of antigen-antibody complexes in tissue spaces and in blood vessel walls that activate complement, most of the damage seemingly being due to the polymorphonuclear leukocytes that phagocytise the deposits and release lysosomal enzymes. The phenomenon, described by Arthus, was in rabbits, but similar reactions (Arthus-type reactions) are observed in guinea pigs, rats, and dogs, as well as in humans.

Synonyms: Arthus reaction.

 

[dentdoc10]

Hi everyone, I have a question about this ASDA 79 released question


The immediate type of hypersensitivity in which histamine does NOT play a major role is

asthma.
urticaria.
anaphylaxis.
Arthus reaction.

They say it is Arthus reaction. But how could it be when Arthus is type 3!
Any ideas? Please share

You answered ur own question...u r rt that arthus reaction is type 3 which is an immune complex/antigen-antibody complex reaction - IgG (main), IgA, IgM are involved. In this, complement, PMN's,macrophages and platelets are activated and hence NO HISTAMINE is released.
Rest of the options are type I reactions in which, mast cells & basophils (which release histamine) and IgE are activated.

 

[MPHer83]

Hi everyone,

I have a question that is really confusing me. Which cusp is larger on the Mandubular Primary First Molar? Is it the Mesiobuccal or the Mesiolingual?? The dental decks say it is the MB cusp, while Wheeler and old exams say it is the ML cusp. Which one is right??? Please advice

 

[Holly J]

Hi everyone,

I have a question that is really confusing me. Which cusp is larger on the Mandubular Primary First Molar? Is it the Mesiobuccal or the Mesiolingual?? The dental decks say it is the MB cusp, while Wheeler and old exams say it is the ML cusp. Which one is right??? Please advice

From what I read,
MB-the largest from occlusal view.
ML-highest and the sharpest.
Hope that helps.

 

[rayman]

From what I read,
MB-the largest from occlusal view.
ML-highest and the sharpest.
Hope that helps.

hi
i agree with you1000%
very nice answer👍

 

[rayman]

hi everybody
i need a help from our friends whom did the test recently
i am so worry about that
my first time within 2 weeks plz help me

 

[MPHer83]

From what I read,
MB-the largest from occlusal view.
ML-highest and the sharpest.
Hope that helps.

Thanks Holly J!! I really appreciate it!😀

 

[sweetsmile1]

Hey Anaita,

How is it going? Even i am planning my NBDE part 1 by end june.
I am looking for the ASDA papers. Where can i find them and what have you done for the Microbiology part. I heard the First Aid to USMLE part 1 is good for it.
Please advise.

Thank you and keep in touch.

 

[rayman]

hi
which of these is a nucleotide?
A-RIBOSE
B-URACIL
C-ADENOSINE
D-THYMIDYLATE
THANK IN ADVANCE

 

[tinman831]

Please refer to this thread to post all future questions for the NBDE1. On a side note, selling or otherwise distributing any material that breaks copyright laws will not be tolerated on SDN.

http://forums.studentdoctor.net/showthread.php?t=814472