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.

 

[teethie]

ok corrected next post.

Q:The perm.tooth that is MOST frequently impacted is:
1.mand.canine
2.max.canine
3.mand.2nd premolar
4.max.lateral incisor
5.mand.lat.incicor

My opinion on this Q and the right answer are different...
Explain please!

 

[wdent]

@ teethie ,nice chart u got there ,,what's the source of this chart on impaction !
I thought that Max Canine will be the naswer for this quest.

 

[teethie]

i am sorry guys i posted wrong.
the sequence i gave is for missing teeth not impaction.
wdent, agree with ur answer.

@ teethie ,nice chart u got there ,,what's the source of this chart on impaction its really cool !
I thought that Max Canine will be the naswer for this quest.

 

[filler84]

Which of the following is the LEAST likely tooth to have a bifurcation of the root?

 

[wdent]

@filler84
I think max.lat insisor!!!

 

[Svetlana]

THANKS!!!!
Very helpful!

 

[Svetlana]

You,guys,are right about max.canine-most frequently impacted.
But why?
Is it due trauma,because its most prominent tooth?

 

[teethie]

yes, it is because max canine is the last tooth to erupt in oral cavity after second molar and there is arch length deficiency due to which it remains impacted.

You,guys,are right about max.canine-most frequently impacted.
But why?
Is it due trauma,because its most prominent tooth?

 

[teethie]

i agree too. pl correct if wrong.

@filler84
I think max.lat insisor!!!

 

[FourthMolar]

Sorry, a little off category, but does anyone know of any released material that has questions in the new format (i.e., clinical testlets)?

 

[teethie]

do not know about any such released questions,but testlets are there in decks.

Sorry, a little off category, but does anyone know of any released material that has questions in the new format (i.e., clinical testlets)?

 

[elmos]

Which of the following is the LEAST likely tooth to have a bifurcation of the root?

what about the max central incisive?

 

[elmos]

teethie for serotonin i think all the above .

 

[teethie]

thank u elmos.
i hope we get the option all of the above in exam otherwise it is hard to choose the best option.

also filler84, please post the options with roots question.

elmos, i do not see options there so it is hard to say if central incisor or lateral incisor. answer will depend on what options we get there.

teethie for serotonin i think all the above .

 

[teethie]

agree with increased ketone bodies synthesis.

good luck teethie but for oxaloacetate deficiency, i think increase ketone body, because, acetyl coa can't enter the krebs cycle so it will switch to the synthesis of ketone body. and i think it will no decrease gluconeogenesis it will stop it. so pls i'm waiting for ur reply.

 

[wdent]

Quest :

When restoring coronal structure the creastion of excessivly round buccoproximal line andgle tends to ?
a.creat ubnormal function with interdental papilla
b.creat normal function in relation with interdental papila
c.improve function of interdental of interdental embrasure
d.decrease occlusal loading

 

[pb2007]

When restoring coronal structure the creastion of excessivly round buccoproximal line andgle tends to ?
a.creat ubnormal function with interdental papilla...........answer
b.creat normal function in relation with interdental papila
c.improve function of interdental of interdental embrasure
d.decrease occlusal loading

jst finished reading deck no 139 that mentions that mesiobuccal and distobuccal line angles protect the interdental papilla by their deflective nature.
i will go with first choice .
plz correct if wrong

 

[Svetlana]

I agree.
Think that the key word is "excessive",and therefore it would be damaging for papilla.

 

[pb2007]

which hypo calcified structure of enamel is parallel to enamel rods?
- tufts
-lamellae
-spindles
-neonatal line.

is it tufts??

 

[wdent]

Thanks pb2007

 

[asheer]

which hypo calcified structure of enamel is parallel to enamel rods?
- tufts
-lamellae===ANS🙂
-spindles
-neonatal lin

 

[wdent]

Can some one answer this pls

CEJ is at which level?
a.1-2 mm apical to alveolar crest
b.at alveolar crest level
c.3-4 mm apical to alveolar crest

 

[teethie]

i think none of these. because cej is coronal to alveolar crest.
correct me if i am wrong.

Can some one answer this pls

CEJ is at which level?
a.1-2 mm apical to alveolar crest
b.at alveolar crest level
c.3-4 mm apical to alveolar crest

 

[teethie]

agree pb2007👍

When restoring coronal structure the creastion of excessivly round buccoproximal line andgle tends to ?
a.creat ubnormal function with interdental papilla...........answer
b.creat normal function in relation with interdental papila
c.improve function of interdental of interdental embrasure
d.decrease occlusal loading

jst finished reading deck no 139 that mentions that mesiobuccal and distobuccal line angles protect the interdental papilla by their deflective nature.
i will go with first choice .
plz correct if wrong

 

[pb2007]

can someone explain how guillian barre syndrome,myasthenia gravis ,wegener's syndrome and goodpasture syndrome are treated by plasmapheresis .i mean what does palsmapheresis do in these cases.
came across this while reading anatomy deck no 13

 

[teethie]

blood is removed from the circulation, the unwanted antibodies are removed, and the blood cells are returned to the circulation.

can someone explain how guillian barre syndrome,myasthenia gravis ,wegener's syndrome and goodpasture syndrome are treated by plasmapheresis .i mean what does palsmapheresis do in these cases.
came across this while reading anatomy deck no 13

 

[pb2007]

thanks for clearing the doubt teethie,
here comes another one
was goin through deck no 81 of da ,it mentions that mandibular buccal cusps of 2nd premolar occludes in mesial fossa of 2nd premolar while kaplan mentions it occludes with the MMR of 2nd max premolar .
could anyone tel if both r correct or if ques mentions both choices which one is to be preffered.

 

[ibeflossin]

thanks for clearing the doubt teethie,
here comes another one
was goin through deck no 81 of da ,it mentions that mandibular buccal cusps of 2nd premolar occludes in mesial fossa of 2nd premolar while kaplan mentions it occludes with the MMR of 2nd max premolar .
could anyone tel if both r correct or if ques mentions both choices which one is to be preffered.

please see: http://forums.studentdoctor.net/showthread.php?t=750059

it may help answer your questions.

 

[teethie]

thanks ibeflossin for clarification. i did not know that either.
pb2007, it is clear now right..

please see: http://forums.studentdoctor.net/showthread.php?t=750059

it may help answer your questions.

 

[pb2007]

thanku ibeflossin .
yes teethie its clear now .

 

[bratdoc]

Q : Which of the following would occur in a skeletal muscle if a patient had a defect in the sarcoplasmic reticulum resulting in a reduced of the activity Ca" pump?
Answer:No muscle force reduction but relaxation of muscle is slowed.

Can somebody explain WHY???

Im so confused with all things concerning muscle contraction ...

Because during the action potential the Sarcoplasmic reticulum releases Ca ions- This is without using the pump...... But at the end of the potential the Sarcoplasmic Reticulum actively takes back its Calcium Ions USING the Ca Pump... so if this pump is defective the muscle relaxation will be slow!!!

 

[elmos]

Maxillary canine in which portion there is greatest area of contact?
a.mesial
b.distal
anyone knows Which premolar is most prone to infection?

 

[wdent]

Can u pls clear this doubt
1)IN maxillary molar where does the furcation starts !

2)Another doubt is that when we r moving the jaw and placing the tips of the canine in conatct ,does the condyle goes DOWNWARD !! or how ?

Thanks in advance ,, because we need to know these concepts..

 

[teethie]

[
Aspiration of food can result in each of the following conditions EXCEPT one. Which one is this EXCEPTION?

a. pneumonia
B. Pneumothorax
C. Lung abscess
D. Atelectasis
E. Asphyxiation

 

[teethie]

hi,

Maxillary canine in which portion there is greatest area of contact?
a.mesial
b.distal----------------answer because contact is more bulbous.

anyone knows Which premolar is most prone to infection?
i think should be maxillary 1 st premolar because of two roots, if sub gingivalcalculus depositon takes place and furcation is involved, this tooth has the worst prognosis due to lack of accessibility to curettage that area.

correct if wrong.

 

[asheer]

a. pneumonia
B. Pneumothorax====ANS
C. Lung abscess
D. Atelectasis
E. Asphyxiation


and wat u said abt the maxillary first premolar is absolutely correct👍

 

[pb2007]

Can u pls clear this doubt
1)IN maxillary molar where does the furcation starts !

2)Another doubt is that when we r moving the jaw and placing the tips of the canine in conatct ,does the condyle goes DOWNWARD !! or how ?

Thanks in advance ,, because we need to know these concepts..

this is what i found out in wheelers for furcation.its mentions that the bifurcation point of two buccal roots is located approx 4mm above the cervical line .pg248
another thing ,since the ques is asking where furcation starts so i was think since mesial is closest to cervical line then may be the answer is mesial .i might be overthinkin here.
mesial furcation point is closest to the cervical line n distal is farthest
[deck no 64}
for 2nd ques i think the condyl moves downward coz canine protected occlusion is related to movement of condyl to either side n we kno that on wroking side first it goes verticall downwards n then translates while on non workin side it goed downward ,forward n medially.
plz correct if i used wrong concept.

 

[pb2007]

which primary teeth shows earlist signs of calcification
incisors
canines
1st molars
2nd molars

i think it should be incisors but the answer marked is 1st molar ??plz confirm
another ques that needs to be confirmed
patient presents with symptoms of an acute abcess on maxillary left lateral incisor.there are no signs of decay or restoration.radiographically which of the following will most likelybe shown as the cause of abcess
dens in dente
enamel pearls
agenesis
dilaceration
concresense .
shouldnt it be dens in dente http://en.wikipedia.org/wiki/Dens_invaginatus
but the marked answer is dilaceration so jst need to confirm i picked up the rite choice .

 

[wdent]

Pb2007 thanks for ur reply..

agree with ur answer(insicors) cant confirm it yet,, iam sure that i read it somewhere !!

 

[Cindrella]

Which cranial nerve supplies the derivatives of 1st branchial arch.
CN IX
CN VII
CN X
CN V === My answer

but deck says its CN VII

pls confirm 😱

 

[pb2007]

Which cranial nerve supplies the derivatives of 1st branchial arch.
CN IX
CN VII
CN X
CN V === My answer

but deck says its CN VII

pls confirm 😱

ur answer is rite cindrella ,mst be a mistake in deck ,check the website for correction

 

[elmos]

[
Aspiration of food can result in each of the following conditions EXCEPT one. Which one is this EXCEPTION?

a. pneumonia
B. Pneumothorax
C. Lung abscess
D. Atelectasis
E. Asphyxiation

i agree with asheer pneumothorax
which condyle goes down when you are moving canine to canine?
u mean contralateral?

 

[bratdoc]

[
Aspiration of food can result in each of the following conditions EXCEPT one. Which one is this EXCEPTION?

a. pneumonia
B. Pneumothorax
C. Lung abscess
D. Atelectasis
E. Asphyxiation

I think it is Pneumothorax too!!! Cause all the other choices are lesions within the lung.... whereas pneumothorax is between the pleura and the lung and food wont be able to go there!!

 

[teethie]

thanksa lot asheer, elmos, bratdoc for confirming pneumothorax...

 

[teethie]

pb2007 , i agree with your answer dens in dente. i think this was discussed n sdn few months ago.
is the key dilaceration given from a reliable source like asda??

patient presents with symptoms of an acute abcess on maxillary left lateral incisor.there are no signs of decay or restoration.radiographically which of the following will most likelybe shown as the cause of abcess
dens in dente
enamel pearls
agenesis
dilaceration
concresense .
shouldnt it be dens in dente http://en.wikipedia.org/wiki/Dens_invaginatus
but the marked answer is dilaceration so jst need to confirm i picked up the rite choice .

 

[pb2007]

pb2007 , i agree with your answer dens in dente. i think this was discussed n sdn few months ago.
is the key dilaceration given from a reliable source like asda??

this ques is frm unreleased exm so key is not to be trusted ,it was marked dilaceration so wanted to confirm coz wikipedia gave exact description of what the ques was askin n how abt the ques on calcification .wanted to ask u frm where did u do the calcification charts for primary n permanent teeth.

 

[teethie]

hi pb2007, wheelers calcification chart is clear and it is reliable.go for the charts than reading theory becuase in theory there is some mistake as i pointed in my previous posts.

if you have mc donald, read fom there abt primary teeth. but i saw there also and it is exactly same as given in wheelers.

and yes answer to your question is incisors(13-16 week in utero)

again if the answer key molars is not from asda then do not think too much.

which primary teeth shows earlist signs of calcification
incisors
canines
1st molars
2nd molars

i think it should be incisors but the answer marked is 1st molar ??plz confirm

 

[pb2007]

hi pb2007, wheelers calcification chart is clear and it is reliable.go for the charts than reading theory becuase in theory there is some mistake as i pointed in my previous posts.

if you have mc donald, read fom there abt primary teeth. but i saw there also and it is exactly same as given in wheelers.

and yes answer to your question is incisors(13-16 week in utero)

again if the answer key molars is not from asda then do not think too much.

which primary teeth shows earlist signs of calcification
incisors
canines
1st molars
2nd molars

i think it should be incisors but the answer marked is 1st molar ??plz confirm

after makin mistake in that previous ques abt eruption i was little confused abt my reliability on wheelers.that previous ques was frm released exm so have to go with the key .i checked calcification chart frm both wheelers n orbans but still wanted to confirm i picked the rite choice.

 

[teethie]

@pb2007after makin mistake in that previous ques abt eruption i was little confused abt my reliability on wheelers.that previous ques was frm released exm so have to go with the key .i checked calcification chart frm both wheelers n orbans but still wanted to confirm i picked the rite choice.[/QUOTE]


trust me in this case it is for sure incisor. i do not answer any question on sdn without reference. thanks for bringing this question. it is a molar which is first tooth to be calcified in permanent teeth but it is incisor in primary teeth.

 

[pb2007]

@pb2007after makin mistake in that previous ques abt eruption i was little confused abt my reliability on wheelers.that previous ques was frm released exm so have to go with the key .i checked calcification chart frm both wheelers n orbans but still wanted to confirm i picked the rite choice.

trust me in this case it is for sure incisor. i do not answer any question on sdn without reference. thanks for bringing this question. it is a molar which is first tooth to be calcified in permanent teeth but it is incisor in primary teeth.[/QUOTE]
thanks teethie.