Lets discuss questions of NBDE 1

This forum made possible through the generous support of SDN members, donors, and sponsors. Thank you.
Status
Not open for further replies.

d dimps

d dimps
15+ Year Member
Joined
Feb 29, 2008
Messages
186
Reaction score
0
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.
 
high gastrin levels occur due to hypercalcemia. extracellular calcium plays a role in gastrin stimulated acid secretion in man and that patients with duodenal ulcer are more sensitive to this calcium dependent mechanism than non-duodenal ulcer subjects.

http://gut.bmj.com/content/25/2/174.abstract

thnks elmos,ur answer seems rite .
another doubt ,can anyone explain how peptic ulcers are related to high calcium .basically how primary hyperparathyroidism causes duodenal ulcers??
 
high gastrin levels occur due to hypercalcemia. extracellular calcium plays a role in gastrin stimulated acid secretion in man and that patients with duodenal ulcer are more sensitive to this calcium dependent mechanism than non-duodenal ulcer subjects.

http://gut.bmj.com/content/25/2/174.abstract
thanks teethie,i was waitin to hear from you.
 
Preganglionic parasympathetic fibers passthrough which of the following structures?

  1. Foramen ovale
  2. Stylomastoid foramen
  3. Foramen magnum and hypoglossal canal
  4. Superior orbital fissure and petrotympanic fissure....answer
why is not b???? I can not find from anatomy book ><😕
 
Preganglionic parasympathetic fibers passthrough which of the following structures?

  1. Foramen ovale
  2. Stylomastoid foramen
  3. Foramen magnum and hypoglossal canal
  4. Superior orbital fissure and petrotympanic fissure....answer
why is not b???? I can not find from anatomy book ><😕
here's what i think why 4th is rite choice.

edinger westphal nucleus sends preganglionic fibres through 3rd cranial nerves to ciliary ganglion n 3rd cranial nerve passes through sup orbital fissure carryin these pregan fibres.although i'm not sure if ciliary ganglion is formed before or after entering superior orbital fissure ,i think its after entering .
secondly from superior salivatory nucleus chorda tympani nerve carries pregan fibres to submandibular ganglion n this nerve passes through petrotympanic fissure.
http://en.wikipedia.org/wiki/Petrotympanic_fissure
 
i want to add somepoint:

i agree with pb2007 explanation for wdent question#1 but decks sometimes do not cover all details.

wdent s another question about 3rd molars.
3rd molars drain into sup deep cervical nodes directly.

my reference:read page 5
http://www.mmcpub.com/pdf/1997jph/199705jph_pdf/97jphv6n5p13.pdf

i am still open for corrections.🙂

all mandibular and maxillary teeth are drained by submandibular lymph nodes except mandibular central incisors which r drained by submental lymph nodes. read deck no 4th for anatomy.it clearly mentions which ares of head n neck r drained by which lymph nodes.
another point submandibular lymph nodes finally drain into deep lymph nodes .

Originally Posted by wdent
question pls !
What drains the mand. 2nd molar ? is it submandibular lymphnodes
what about maxillary 3rd molar ? is it too submand.lymph node !!!!!
 
How will chronotrophy and inotropy be affected when there is sympathetic stimulation to the heart -- Chronotropy:Inotropy?

  1. Negatively:Negatively
  2. Positively😛ositively
  3. Negatively😛ositively

wiki: Chronotropic drugs may change the heart rate by affecting the nerves controlling the heart, or by changing the rhythm produced by the sinoatrial node. Positive chronotropes increase heart rate; negative chronotropes decrease heart rate.
D.Negatively😛ositively😕....answer, but why???
 
here's what i think why 4th is rite choice.

edinger westphal nucleus sends preganglionic fibres through 3rd cranial nerves to ciliary ganglion n 3rd cranial nerve passes through sup orbital fissure carryin these pregan fibres.although i'm not sure if ciliary ganglion is formed before or after entering superior orbital fissure ,i think its after entering .
secondly from superior salivatory nucleus chorda tympani nerve carries pregan fibres to submandibular ganglion n this nerve passes through petrotympanic fissure.
http://en.wikipedia.org/wiki/Petrotympanic_fissure
Thanks a lot!!!👍👍👍👍👍👍👍👍👍👍👍😍
 
How will chronotrophy and inotropy be affected when there is sympathetic stimulation to the heart -- Chronotropy:Inotropy?

  1. Negatively:Negatively
  2. Positively😛ositively
  3. Negatively😛ositively

wiki: Chronotropic drugs may change the heart rate by affecting the nerves controlling the heart, or by changing the rhythm produced by the sinoatrial node. Positive chronotropes increase heart rate; negative chronotropes decrease heart rate.
D.Negatively😛ositively😕....answer, but why???
i think it should be POSITIVELY😛OSITIVELY
but ur answer got me confused
so i checked
http://www.cvphysiology.com/Blood Pressure/BP009.htm
So im doubting the answerkey!! where is the question from?
 
can anyone clear this 😕

in the physiology deck no:113

they say that insulin inhibits protien synthesis n glucagon increases protien synthesis is that true !!!!!

n wat does it mean by increse in plasma amino acids is dat cos of the incres protiene catabolism !!!!!!!😕

pls can anyone help wid this am so confused this is my last readin n am tensed seei this nw :scared:
 
can anyone clear this 😕

in the physiology deck no:113

they say that insulin inhibits protien synthesis n glucagon increases protien synthesis is that true !!!!!

n wat does it mean by increse in plasma amino acids is dat cos of the incres protiene catabolism !!!!!!!😕

pls can anyone help wid this am so confused this is my last readin n am tensed seei this nw :scared:
Insulin always INCREASES protien synthesis!!
 
thnks for bringing this fact rite teethie ,i was not aware that 3rd molars drain into superior lymph nodes.i jst learned it directly frm decks blindly.
 
asheer do not get stressed, as long as you have sdn help, post your last minute query, we will be more than happy to help.

coming to your question, i checked in kaplan, insulin promotes protein synthesis because it stimulates amino acid uptake and insulin inhibits protein degradation by decreasing lysosomal activity.

not to forget, insulin has lipogenesis and anti lipolytic effects both.



can anyone clear this 😕

in the physiology deck no:113

they say that insulin inhibits protien synthesis n glucagon increases protien synthesis is that true !!!!!

n wat does it mean by increse in plasma amino acids is dat cos of the incres protiene catabolism !!!!!!!😕

pls can anyone help wid this am so confused this is my last readin n am tensed seei this nw :scared:
 
hi.

I agree
Sharpest angle is mesioincisal of C.I 👍... but max or mand?? i think mand! what do u say?

for mandibular central incisor, both mesial and distal incisal angles are sharp. this is a characterisitic of this tooth.

for max central incisor, only mesioincisal angle is sharp..
now choosing one of this is tricky, since there were no options. lets say both of these .


sorry elmos, can not give you one option answer on this question.

About the convex angle---- which angle exactly of a canine?---distoincisal
 
need help with these ques
bulk of tooth formed by
pulp
dentin
enamel
crown
cementum
is it dentin?
2most convex incisal angle on anterior teeth is found on which angle of incisor
-distoincisal of max lat
-distoincisal of mand lat.........is it this choice
-distoincisal of mandibular central
-mesioincisal of max lat
-mesioincisal of max central
3 in class 3 malocclusion mesiofacial cusp of mand 1st molar occludes in
-mesial fossa of 1st premolar
-central fossa of max 1st molar
-mesial fossa of max 2nd premolar.....is it this one
-embrasure between max 1st n 2nd molars
-embrasure between max 2nd premolar n 1st molar
 
Last edited:
bulk of tooth formed by
pulp
dentin
enamel
crown
cementum
is it dentin?

Yes DENTIN

2most convex incisal angle on anterior teeth is found on which angle of incisor
-distoincisal of max lat
-distoincisal of mand lat.........is it this choice
-distoincisal of mandibular central
-mesioincisal of max lat
-mesioincisal of max central

Its either max lateral or mand lateral


3 in class 3 malocclusion mesiofacial cusp of mand 1st molar occludes in
-mesial fossa of 1st premolar
-central fossa of max 1st molar
-mesial fossa of max 2nd premolar.....is it this one
-embrasure between max 1st n 2nd molars
-embrasure between max 2nd premolar n 1st molar
 
bulk of tooth formed by
pulp
dentin
enamel
crown
cementum
is it dentin?

Yes DENTIN

2most convex incisal angle on anterior teeth is found on which angle of incisor
-distoincisal of max lat
-distoincisal of mand lat.........is it this choice
-distoincisal of mandibular central
-mesioincisal of max lat
-mesioincisal of max central

Its either max lateral or mand lateral


3 in class 3 malocclusion mesiofacial cusp of mand 1st molar occludes in
-mesial fossa of 1st premolar
-central fossa of max 1st molar
-mesial fossa of max 2nd premolar.....is it this one
-embrasure between max 1st n 2nd molars
-embrasure between max 2nd premolar n 1st molar

Yes its the mesial fossa of 2nd premolar
 
hi, correct me if wrong.


need help with these ques
bulk of tooth formed by
pulp
dentin ------------------------answer
enamel
crown
cementum
is it dentin?
2most convex incisal angle on anterior teeth is found on which angle of incisor
-distoincisal of max lat---------------------answer
-distoincisal of mand lat.........is it this choice
-distoincisal of mandibular central
-mesioincisal of max lat
-mesioincisal of max central
 
need help with these ques
bulk of tooth formed by
pulp
dentin ANSWER 100% sure
enamel
crown
cementum
is it dentin?
2most convex incisal angle on anterior teeth is found on which angle of incisor
-distoincisal of max lat ANSWER 100% sure
-distoincisal of mand lat.........is it this choice
-distoincisal of mandibular central
-mesioincisal of max lat
-mesioincisal of max central
3 in class 3 malocclusion mesiofacial cusp of mand 1st molar occludes in
-mesial fossa of 1st premolar
-central fossa of max 1st molar
-mesial fossa of max 2nd premolar.....is it this one ANSWER-This seems most appropriate from the given options
-embrasure between max 1st n 2nd molars
-embrasure between max 2nd premolar n 1st molar
👍
 
1987 exam:
😕Sounds heard during systole in the antecubital space are produced by

  1. closure of AV valves.
  2. closure of the aortic valve.
  3. turbulent blood flow through the artery.....answer but why?? or wrong answer again??
  4. laminar blood flow through the occluded artery
 
1987 exam:
😕Sounds heard during systole in the antecubital space are produced by

  1. closure of AV valves.
  2. closure of the aortic valve.
  3. turbulent blood flow through the artery.....answer but why?? or wrong answer again??
  4. laminar blood flow through the occluded artery

Hi Deck
The answer is correct
Basically the Sounds heard at the antecubital space are known as Korotkoff sounds and they become audible BECAUSE the cuff tries to restrict the blood making it change its flow from smooth TO turbulent which makes the sound audible!!
That is why when the pressure of the cuff is slowly released and it reaches below the diastolic pressure the restriction of blood flow by the cuff ceases and the blood flow becomes smooth again leading to absence of the sounds again!!!
If u need more explainin lemme know i will be happy to help!!
👍👍👍😉😉
 
thanks for confirming the answers guys,
i have another doubt
its frm M series ,ques 112
a patient has an extremely wide notched tooth in the mandibular left central incisor portion.clinical and radiographic examination reveal 28 teeth have erupted ,but 4 3rd molars have not erupted .which of following conditions exist.
fusion
dens in dente
concresense
dilaceration
gemination
answer given in key is 5th choice ,should'nt it be 1st choice {fusion}coz tooth number is normal .
 
thanks for confirming the answers guys,
i have another doubt
its frm M series ,ques 112
a patient has an extremely wide notched tooth in the mandibular left central incisor portion.clinical and radiographic examination reveal 28 teeth have erupted ,but 4 3rd molars have not erupted .which of following conditions exist.
fusion
dens in dente
concresense
dilaceration
gemination
answer given in key is 5th choice ,should'nt it be 1st choice {fusion}coz tooth number is normal .

Fusion would have one less tooth number. Gemination is when two crowns developed from a single tooth germ, causing there to be the same number of teeth. Clinically they look the same. Fusion = 1 less tooth in the arch, Gemination = same number of teeth in the arch. Hope this helps.
 
Ten days after hospitalization for a large, incapacitating myocardial infarct, a 50-year-old man suddenly develops paralysis of the right side of his body. The best explanation for his brain damage is

  1. rupture of a congenital aneurysm of the circle of Willis.
  2. brain abscess from necrosis of the myocardium.
  3. detachment of a bacterial embolus from the pulmonic valve.
  4. detachment of a mural thrombus from the right ventricle.
  5. detachment of a mural thrombus from the left ventricle. answer
but I think D is the right answer, because it should block the same side, right? Or I think the wrong way??? Thanks
 
Which of the following are rarely, if ever, acquired from another individual ? (a) Blastomycosis; (b) Sporotrichosis; (c) Histoplasmosis; (d) Neonatal candidiasis.

  1. (a) and (b) only
  2. (a), (b) and (c)
  3. (a), (b) and (d)
  4. (a) and (c) only
  5. (b) and (c) only
  6. (b) and (d) only
  7. All of the above.
  8. Why d) is not included???? I thought a and c were from breath spores from air....>< AM I wrong?? Plz help me!😕
 
On which of the following primary molars would a prominent transverse ridge typically occur?

  1. Maxillary first molar
  2. Maxillary second molar
  3. Mandibular first molar
  4. Mandibular second molar....how about the second molar?
 
Which of the following are rarely, if ever, acquired from another individual ? (a) Blastomycosis; (b) Sporotrichosis; (c) Histoplasmosis; (d) Neonatal candidiasis.

  1. (a) and (b) only
  2. (a), (b) and (c)
  3. (a), (b) and (d)
  4. (a) and (c) only
  5. (b) and (c) only
  6. (b) and (d) only
  7. All of the above.
  8. Why d) is not included???? I thought a and c were from breath spores from air....>< AM I wrong?? Plz help me!😕
read deck no 90 frm micro part {latest version 09_10},
 
Sorry to keep posting old exam questions...could anyone tell me why answer is not 1, I thought root is just 2+eruption month



Calcification of the roots of the primary dentition is normally completed at what age?

  1. 1-2 years
  2. 3-4 years😕
  3. 5-6 years
  4. 7-8 years
  5. None of the above
 
On which of the following primary molars would a prominent transverse ridge typically occur?

  1. Maxillary first molar
  2. Maxillary second molar
  3. Mandibular first molar
  4. Mandibular second molar....how about the second molar?
i think answer should be 2nd molar coz 1st primary molar does'nt resemble any of the other teeth and 2nd molar resembles 1st permanent mandibular molar more so should'nt 2nd primary molar be the answer.
 
Ten days after hospitalization for a large, incapacitating myocardial infarct, a 50-year-old man suddenly develops paralysis of the right side of his body. The best explanation for his brain damage is

  1. rupture of a congenital aneurysm of the circle of Willis.
  2. brain abscess from necrosis of the myocardium.
  3. detachment of a bacterial embolus from the pulmonic valve.
  4. detachment of a mural thrombus from the right ventricle.
  5. detachment of a mural thrombus from the left ventricle. answer
but I think D is the right answer, because it should block the same side, right? Or I think the wrong way??? Thanks
can anyone provide reasoning for this ques ??
 
can anyone provide reasoning for this ques ??

If we have thrombus detached from RV then it goes to the lungs.(pulmonary circuit)
But if we have thrombus detached from LV---->systemic circulation(esp.in the brain where we see a stroke)

))))))I think its right
 
Hey(Previet)
Svetlana...
Tryin to link the relation ship between Bronchitis and Po2 level ,,it suppose to decrease ,,why increase ,,,r u sure it says increase Po2 !!!!!!
Lookin to hear frm u ..where u read it from !
 
yes , even i read it as decreased PO2 not increased.

something appears wrong in question.


Hey(Previet)
Svetlana...
Tryin to link the relation ship between Bronchitis and Po2 level ,,it suppose to decrease ,,why increase ,,,r u sure it says increase Po2 !!!!!!
Lookin to hear frm u ..where u read it from !
 
awesome explanaton, totally agree.👍



Fusion would have one less tooth number. Gemination is when two crowns developed from a single tooth germ, causing there to be the same number of teeth. Clinically they look the same. Fusion = 1 less tooth in the arch, Gemination = same number of teeth in the arch. Hope this helps.
 
No guys, answer is primary mand 1 st molat. prominent transverse ridge is a characteristic feature of primary mand 1st molar.
donot forget the word prominent.




i think answer should be 2nd molar coz 1st primary molar does'nt resemble any of the other teeth and 2nd molar resembles 1st permanent mandibular molar more so should'nt 2nd primary molar be the answer.

Originally Posted by deck
On which of the following primary molars would a prominent transverse ridge typically occur?
  1. Maxillary first molar
  2. Maxillary second molar
  3. Mandibular first molar
  4. Mandibular second molar....how about the second molar?
 
Status
Not open for further replies.
Top