Lets discuss questions of NBDE 1

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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.

 

[Svetlana]

Adverse effect of statin treatment is impaired bile synthesis.
I also remember smth about CoQ(ubiquinone) impairment.
Am i confusing smth?

 

[Svetlana]

Do you know smth about relationship between Hurler syndrome and narrowing of coronary art.?

 

[pb2007]

pb2007, all i know is there are 2 carboxylic gps and one amino gp so charge will be -1

Does anyone know abt this question?? I am unable to solve it .😕😕

thanku so much teethie for your effort ,this ques is a big mystery for me .hope someone comes out with the answer.

 

[Svetlana]

Tongue protrusion reflex????
What's that???
(induced by TMJ,pharynx,larynx stimulation)

 

[Svetlana]

thanku so much teethie for your effort ,this ques is a big mystery for me .hope someone comes out with the answer.

really no idea about this Q.
Not good in Chemistry...

 

[Cindrella]

thanku so much teethie for your effort ,this ques is a big mystery for me .hope someone comes out with the answer.

pb2007 ...

Acidic amino acids carry negative charges
Basic amino acids carry positive charges
Neutral amino acids carry no charges


so i guess teethie is right about -1 .... but again what co relation we have with that ph 1 .. no clue ! bratdoc would know it 🙂

 

[teethie]

@Svetlana: your ques tions are very hard, but below is what i could find out.

THIS is about YOUR QUESTION OF ENAMEL AND CEMENTOENAMEL JUNCTION
Ref: Carranza

60-65% cementum ovelaps enamel
30% edge to edge
5-10% cementum and enamle fails to meet.


In Hurler syndrome, there is narrowing of coronary arteries and thickening of valves. Exact pathophysology mechanism i dont know but yes there is a relation of coronary arteries and hurler syndrome.

pl correct if wrong.

 

[teethie]

...

Candida albicans under the microscope
my ans😛seudohyphae+blastoconidia---------i agree with you.
ans:ONLY blastoconidia

Is it a mistake?

 

[pb2007]

Tongue protrusion reflex????
What's that???
(induced by TMJ,pharynx,larynx stimulation)

tongue protrusion caused by genioglossus which is supplied by hypoglossal,so i dont understand how will it be induced by tmj or pharynx or larynx😕😕
your ques are so hard svetlana,i'm feelin scared of exm now.

 

[pb2007]

pb2007 ...

Acidic amino acids carry negative charges
Basic amino acids carry positive charges
Neutral amino acids carry no charges


so i guess teethie is right about -1 .... but again what co relation we have with that ph 1 .. no clue ! bratdoc would know it 🙂[/QUOTE
thanks cindrella ,svetlana,we all gave it a try,now waiting what bratdoc has to say on this . the word mentiong at ph 1 is confusing me as i dont kno if if it is significant or its jst to confuse us.

 

[Cindrella]

tongue protrusion caused by genioglossus which is supplied by hypoglossal,so i dont understand how will it be induced by tmj or pharynx or larynx😕😕
your ques are so hard svetlana,i'm feelin scared of exm now.

pb2007 ......Don't get discouraged by these Q's last minute... Just read them to have an idea... 2 % chance that such a question wd appear .... so even if it appears go with your gut at that time... don't worry !

may be genioglossus was not in the option 😉

 

[Cindrella]

Isoelectric point is - total charge 0 ... right ?

Zwitter ion ?? is it same number of positive and negative ??

pk ???


Can some pls tell this in short , i keep forgetting

 

[pb2007]

pb2007 ......Don't get discouraged by these Q's last minute... Just read them to have an idea... 2 % chance that such a question wd appear .... so even if it appears go with your gut at that time... don't worry !

may be genioglossus was not in the option 😉

thanks cindrella ,these end days are really hard ,jst need to keep my mind in positive direction.

 

[pb2007]

Isoelectric point is - total charge 0 ... right ?

Zwitter ion ?? is it same number of positive and negative ??

pk ???


Can some pls tell this in short , i keep forgetting

you are rite cindrella
for pka i jst know that if
ph above pka then base exists
ph below pka acid exists

 

[Svetlana]

Thanks a lot,everyone!!!
These Q a re really hard.
But i decided not to worry about it,coz most of the Q should be doable.
But still there should be some weird Q,which we will not be able to answer!
In order not to get 99!!!
I think that's the policy of NBDE!

 

[Svetlana]

I was confused with 1 more Q.
Enamel lamellae.
my ans.from enamel surface-->DEJ
ans:vice versa

Wiki!!
Enamel lamellae are a type of hypomineralized structure in teeth that extend either from the dentinoenamel junction (DEJ) to the surface of the enamel, or vice versa. In essence, they are prominent linear enamel defects, but are of no clinical consequence.[1] These structures contain proteins, proteoglycans, and lipids.
Enamel lamellae should not be confused with two similar entities, enamel tufts and enamel spindles. Enamel tufts are small, branching defects that are found only at the DEJ, and so differ from lamellae which can be facing either direction and are strictly linear. Enamel spindles are also linear defects, but they too can be found only at the DEJ, because they are formed by entrapment of odontoblast processes between ameloblasts prior to and during amelogenesis.


That's new for me!!!
I didn't know that lamellae can go in both directions!!!

 

[teethie]

hey pb2007,
do not feel scared or discouraged at this stage. I have heard from people that questions from crack nbde are harder than the real exam and you only see 1 or 2 questions from it in the real exam. I am not worrying about these questions. key to success in this exam is basics.these questions are beyond basics. we keep searching hard questions and forget to revise the conceptual questions. so do not panic, whatever you have studied is good, try to retain that and solve as much questions to know if you are clear abt your ideas or no.
just a little suggestion from sdner buddy🙂

tongue protrusion caused by genioglossus which is supplied by hypoglossal,so i dont understand how will it be induced by tmj or pharynx or larynx😕😕
your ques are so hard svetlana,i'm feelin scared of exm now.

 

[teethie]

Svetlana:
dont rely on wiki always. rely on textbooks only.

I was confused with 1 more Q.
Enamel lamellae.
my ans.from enamel surface-->DEJ--i agree with you.
checked in ref: orbans
ans:vice versa------I never read abt it.

Wiki!!
Enamel lamellae are a type of hypomineralized structure in teeth that extend either from the dentinoenamel junction (DEJ) to the surface of the enamel, or vice versa. In essence, they are prominent linear enamel defects, but are of no clinical consequence.[1] These structures contain proteins, proteoglycans, and lipids.
Enamel lamellae should not be confused with two similar entities, enamel tufts and enamel spindles. Enamel tufts are small, branching defects that are found only at the DEJ, and so differ from lamellae which can be facing either direction and are strictly linear. Enamel spindles are also linear defects, but they too can be found only at the DEJ, because they are formed by entrapment of odontoblast processes between ameloblasts prior to and during amelogenesis.


That's new for me!!!
I didn't know that lamellae can go in both directions!!!

 

[teethie]

agree with pb2007 on genioglossus👍

tongue protrusion caused by genioglossus which is supplied by hypoglossal,so i dont understand how will it be induced by tmj or pharynx or larynx😕😕
your ques are so hard svetlana,i'm feelin scared of exm now.

 

[pb2007]

hey pb2007,
do not feel scared or discouraged at this stage. I have heard from people that questions from crack nbde are harder than the real exam and you only see 1 or 2 questions from it in the real exam. I am not worrying about these questions. key to success in this exam is basics.these questions are beyond basics. we keep searching hard questions and forget to revise the conceptual questions. so do not panic, whatever you have studied is good, try to retain that and solve as much questions to know if you are clear abt your ideas or no.
just a little suggestion from sdner buddy🙂

thanks teethie for your supporting words ,was feelin a little low lukin at these ques in morning but u r rite i should concentrate on basics .
thanks buddy

 

[Svetlana]

Teethy,do you mean this article from Wiki is wrong?
Lamellae goes from enamel surface only?

 

[elmos]

i'm also feeling depressed when i see these questions , it's my first experience with nbde exam i hope it's not like this.😕

 

[elmos]

hello
Carious lesions are most likely to develop if a patient has
A. a high lactobacillus count.
B. saliva with low buffering capacity.
C. plaque on his teeth.
D. lactic acid in his mouth.
can anyone pls answer this because here i'm little confused

 

[anniemirza]

Teethy,do you mean this article from Wiki is wrong?
Lamellae goes from enamel surface only?

According to the ADA journal-enamel lamellae extend from the enamel surface towards the dentin....stating it as one of the reasons for caries progression from enamel towards inside.
Some buks do say the vice-versa....but i guess better to stick to the ADA.

 

[anniemirza]

hello
Carious lesions are most likely to develop if a patient has
A. a high lactobacillus count.
B. saliva with low buffering capacity---answer
C. plaque on his teeth.
D. lactic acid in his mouth.
can anyone pls answer this because here i'm little confused

Coz i think even if all the other factors are present,saliva will still prevent it from caries formation.Thats wad I read somewhr...

 

[elmos]

Coz i think even if all the other factors are present,saliva will still prevent it from caries formation.Thats wad I read somewhr...

thks for your answer, but what about the dental plaque?

 

[Svetlana]

hello
Carious lesions are most likely to develop if a patient has
A. a high lactobacillus count.
B. saliva with low buffering capacity.
C. plaque on his teeth.
D. lactic acid in his mouth.
can anyone pls answer this because here i'm little confused

I think "C"!!!
Coz as i remember plaque is the major determinant of caries development.
Not sure

 

[anniemirza]

thks for your answer, but what about the dental plaque?

Saliva prevents bacterial colonisation,plaque and calculus formation due its cleansing effects and when there is no bacteria then no lactic acid production.

 

[Svetlana]

According to the ADA journal-enamel lamellae extend from the enamel surface towards the dentin....stating it as one of the reasons for caries progression from enamel towards inside.
Some buks do say the vice-versa....but i guess better to stick to the ADA.

Thanks!!!
Lets go with this!!!

 

[Svetlana]

Morning everybody!!!
Let's start!

If Na+ reabs.DECREASE in prox.conv.tybule by drug-->ans:increase urine glucose
Why?

Is it right that among PM, max.1st has SHORTEST root?

Ok,let's skip 1st Q,it's weird.
Any idea about max.PM?????

 

[anniemirza]

Ok,let's skip 1st Q,it's weird.
Any idea about max.PM?????

Yes among premolars, maxillary 1st premolar has the shortest root.

 

[Svetlana]

Yes among premolars, maxillary 1st premolar has the shortest root.

Thanks!!!
So its the biggest overall among PM with the shortest root among PM.🙄

 

[anniemirza]

Thanks!!!
So its the biggest overall among PM with the shortest root among PM.🙄

Biggest interms of what ???

 

[pb2007]

Ok,let's skip 1st Q,it's weird.
Any idea about max.PM?????

If Na+ reabs.DECREASE in prox.conv.tybule by drug-->ans:increase urine glucose
Why?
svetlana the answer to this i think is coz in proximal convoluted tubule the glucose uptake is in combination with sodium i mean one arm of receptor holds a molecule of sodium and another arm holds glucose ,so sodium is transported frm high to low conc in cell n glucose goes inside cell frm lumen of pct by secondary active transport so wen Na + resorption affected hence glucose uptake will also be affected.

can anyone plz clarify this doubt
if a patient has increased osmolarity what is most effective that patient needs
renin
ADH

is it rite that ADH is purely relaated with absorption of water ,has nothing to do with solute uptake while renin reponds both to decreased pressure and sodium conc.
so in above ques when osmolarity is increased we need jst ADH .

plz clear my doubt regarding this ques ,which is better choice renin or ADH

 

[Svetlana]

Biggest interms of what ???

Overall size.
I read it from some ASDA papers i think

 

[Svetlana]

If Na+ reabs.DECREASE in prox.conv.tybule by drug-->ans:increase urine glucose
Why?
svetlana the answer to this i think is coz in proximal convoluted tubule the glucose uptake is in combination with sodium i mean one arm of receptor holds a molecule of sodium and another arm holds glucose ,so sodium is transported frm high to low conc in cell n glucose goes inside cell frm lumen of pct by secondary active transport so wen Na + resorption affected hence glucose uptake will also be affected.

Sure!!!!
Totally forgot this concept!!!
Thank you!!!!

 

[pb2007]

Overall size.
I read it from some ASDA papers i think

maxillary 1st is widest of all premolars

 

[Svetlana]

Pb2007 : I think ADH
Coz it's action is only about water

 

[pb2007]

can anyone plz clarify this doubt
if a patient has increased osmolarity what is most effective that patient needs
renin
ADH

is it rite that ADH is purely relaated with absorption of water ,has nothing to do with solute uptake while renin reponds both to decreased pressure and sodium conc.
so in above ques when osmolarity is increased we need jst ADH .

plz clear my doubt regarding this ques ,which is better choice renin or ADH

2 how epinephrine raises blood glucose level at receptor level??

 

[elmos]

If Na+ reabs.DECREASE in prox.conv.tybule by drug-->ans:increase urine glucose
Why?
svetlana the answer to this i think is coz in proximal convoluted tubule the glucose uptake is in combination with sodium i mean one arm of receptor holds a molecule of sodium and another arm holds glucose ,so sodium is transported frm high to low conc in cell n glucose goes inside cell frm lumen of pct by secondary active transport so wen Na + resorption affected hence glucose uptake will also be affected.

can anyone plz clarify this doubt
if a patient has increased osmolarity what is most effective that patient needs
renin
ADH

is it rite that ADH is purely relaated with absorption of water ,has nothing to do with solute uptake while renin reponds both to decreased pressure and sodium conc.
so in above ques when osmolarity is increased we need jst ADH .

plz clear my doubt regarding this ques ,which is better choice renin or ADH

pb u are right the patient needs ADH, because the osmoreceptors sense
the increase and the adh is released from the post pituitary.

 

[pb2007]

pb u are right the patient needs ADH, because the osmoreceptors sense
the increase and the adh is released from the post pituitary.

thanks elmos
another ques
1 what cell cycle phase is characteristic of seperating nuclear material
is it metaphase or anaphase

2 in sliding filament theory is there any component that reduces in sizes or do the band length remains same.remember reading somewhere that something is reduced ,cant recall now .
found answer for this 2nd ques ,its I bands gets smalller but A band doesnt change
what about H band??

 

[elmos]

pb i think it's anaphase because the chromatide will seperate and migrate to the opposite pole

 

[deck]

Hey decks....Thanks alot for ur review on how the exam was...Thats really nice of u to come back and post something like that, that too with so much of detail.Appreciate that man!!!👍I guess u are not a foreign-trained dentist coz u said u are aiming for 75 !well iam one and 75 isnt enough for us ,not even close!🙁😡 anyways i really hope that u get ur desired score 🙂🙂
can u share sm more details like how was the standard of ur exm...comparable to asda papers or crack nbde or any other source and are decks and first aid enough ?(to hit 85!)how much more do v have to put to hit such a big target???Thanks.
reply appreciated from anybody and evrybdy...🙂

I think it's harder than the old exam...or maybe I did not study well 🙁

 

[elmos]

thanks elmos
another ques
1 what cell cycle phase is characteristic of seperating nuclear material
is it metaphase or anaphase

2 in sliding filament theory is there any component that reduces in sizes or do the band length remains same.remember reading somewhere that something is reduced ,cant recall now .
found answer for this 2nd ques ,its I bands gets smalller but A band doesnt change
what about H band??

pb h band shortened also it's nbde first aid only A stay the same

 

[pb2007]

pb h band shortened also it's nbde first aid only A stay the same

thanks for confirming elmos.

 

[Svetlana]

maxillary 1st is widest of all premolars

Thanks for correction!

 

[Svetlana]

pb i think it's anaphase because the chromatide will seperate and migrate to the opposite pole

Agree!!!

 

[anniemirza]

I think it's harder than the old exam...or maybe I did not study well 🙁

Thank you Deck for the reply🙂...waitin to hear the happy news abt ur score soon....gudluck👍

 

[pb2007]

what hormone responsible for producing milk in mammary glands
prolactin
oxytocin
i jst that oxytocin has milk letdown reflex so is prolactin the rite answer

what is sympathetic end organ??no idea
storage form of thyroid hormone ...is it thyroglobulin

 

[elmos]

what hormone responsible for producing milk in mammary glands
prolactin 👍
oxytocin
i jst that oxytocin has milk letdown reflex so is prolactin the rite answer

what is sympathetic end organ??no idea
storage form of thyroid hormone ...is it thyroglobulin

👍
i don't have any idea about sympathetic end organ