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.

 

[bratdoc]

2 Quest. from previous Threads

*The crown of maxillary canine normally exhibits?
a.lingual ridge---ANSWER
b.linguogingival groove.....answer ( this quest.been several times on sdn !!)



*When viewd sagitally,which of the following teeth have their long axis at an angle LEAST perpandicular to occlusal plane ?
a.maxillary incisors---ANSWER
b.Mand. canines
c.Mand. premolars
d.Max.premolar
e.Mand.ist molar..............answer !!!


Are these 2 questions correct or Not !! pls correct me if iam wrong !!

Do let me know if i am wrong!

 

[bratdoc]

Thank you teethie, wdent, pb2007,elmos,asheer,cindrella and everyone regular on this thread!!! All the very best to everyone! 👍👍👍👍

 

[drdds3]

Refer below

2 Quest. from previous Threads

*The crown of maxillary canine normally exhibits?
a.lingual ridge
b.linguogingival groove.....answer ( this quest.been several times on sdn !!) It is labiolingually linguogingival groove (given in decks for sure)



*When viewd sagitally,which of the following teeth have their long axis at an angle LEAST perpandicular to occlusal plane ?
a.maxillary incisors (answer)
b.Mand. canines
c.Mand. premolars
d.Max.premolar
e.Mand.ist molar..............answer !!!


Are these 2 questions correct or Not !! pls correct me if iam wrong !!

 

[bratdoc]

Refer below

But the maxillary Canine DOES have a Lingual ridge doesnt it???!😱

 

[bratdoc]

A slight detachment of the retina results in a decrease of length from the optical center, and the subject therefore exhibits
1.Near sightedness
2.Far sightedness
3.Strabismus
4.Nystagmus

i think is near sightedness ..... am i correct? if not WHY?



The distal-most region of the cochlea relative to the oval windoe is believed to be the point of localization for
1.High amplitude
2.Low amplitude
3.High frequency
4.Intermediate frequency
5.Low frequency

Can someone exlain the whole thing to me???


Which of the following muscles is totally denervated as a result of a section of spinal nerve C5?
1.trapezius
2.Teres Major
3.Subscapularis-----MY ANSWER
4.Rhomboid Major----ASDA ANSWER
5.Latissimus dorsi

Can someone clarify this?

 

[Cindrella]

But the maxillary Canine DOES have a Lingual ridge doesnt it???!😱

I agree with bratdoc... lingual ridge is present in Maxillary canines.... Linguo gingival groove is a feature of maxillary later incisor... right ?!?

 

[deck]

Meiotic division occurs in:
1.spermatozoa
2.spermatogonia
3.spermatids
4.primary spermatocytes (ans) any explanations???

Glucose,ketone bodies,fatty acids can be directly metabolized by:
1.brain
2.RBC
3.Muscle(ans)
4.adipose tissue
5.hepatocyte(why not???)

I think because ketone bodies can be formed in the liver, but can not be used as energy in the liver

Plz correct me if I am wrong..Thanks!😍

 

[deck]

Thank u soooo much teethie, pb2007.


nitrogen can be derived from all of the following except
a. intracellular aminoacids
b. essential AAs which r synthesized in body
c. nonessential AAs from body
d. dietary product....Why the answer is d?? I thought negative nitrogen in the body is the result of lack of ingestion




function of fibroblasts in gingive
a. heparin formation
b. melanin formation
c. keratin formation

....is this answer, because heparin is anti-coagulator and from wiki, in humans, melanin is the primary determinant of skin color. It is also found in hair, the pigmented tissue underlying the iris of the eye, and the stria vascularis of the inner ear. In the brain, tissues with melanin include the medulla and zona reticularis of the adrenal gland, and pigment-bearing neurons within areas of the brainstem, such as the locus coeruleus and the substantia nigra.

 

[Svetlana]

The distal-most region of the cochlea relative to the oval windoe is believed to be the point of localization for
1.High amplitude
2.Low amplitude
3.High frequency
4.Intermediate frequency
5.Low frequency-ans

High frequency-base
Low freq.-apex of the cochlea

Its from USMLE kaplan notes

 

[wdent]

Thnaks Drdds and bratdoc!

The crown of maxillary canine normally exhibits?
a.lingual ridge
b.linguogingival groove.....answer ( this quest.been several times on sdn !!) It is labiolingually linguogingival groove (given in decks for sure)




Guys for this Quest.whats the final answer ,both r rite choice a and b.. or follow the decks !!
confusin!

 

[aiming 4 dds]

Thanx all for such a great job..............I get lots of new things to learn, but i m confused.i have to give exam in 2 months and when i look at these questions i feel scared.i hardly can solve any of them. What shud i do, i shud postpone my exam or what...............If one wants to give exam in 2 months what is the prime factor to decide as if i m prepared or not..........how 2 revise all the things at same time coz if i pick one subject i forget about the other........i dont have much time.............

 

[elmos]

which 2nd premolar has trapezoidal shape from occlusal view :
U type
or H type?
if can anyone answer this pls?

 

[teethie]

@elmos: H and U shape is present on occlusal surface so U shape can make the tooth look like trapezoidal. otherwise crown will still be square.

@aiming 4 dds: key is to revise as much what you are studying and yes some of the questions posted here are tough and everyone is feeling it same like you.

@svetlana: thanks for the reference.

@wdent, drdds: i agree with bratdoc and cindrella for the answer lingual ridge. see the similar ques#285 in pilot paper. decks have some errors.
The crown of maxillary canine normally exhibits?
a.lingual ridge------------answer
b.linguogingival groove

@bratdoc: i agree with your answer but asda key is far sightedness. Is that we both are understanding something wrong.

A slight detachment of the retina results in a decrease of length from the optical center, and the subject therefore exhibits
1.Near sightedness--------answer
2.Far sightedness
3.Strabismus
4.Nystagmus

 

[bratdoc]

@elmos: H and U shape is present on occlusal surface so U shape can make the tooth look like trapezoidal. otherwise crown will still be square.

@aiming 4 dds: key is to revise as much what you are studying and yes some of the questions posted here are tough and everyone is feeling it same like you.

@svetlana: thanks for the reference.

@wdent, drdds: i agree with bratdoc and cindrella for the answer lingual ridge. see the similar ques#285 in pilot paper. decks have some errors.
The crown of maxillary canine normally exhibits?
a.lingual ridge------------answer
b.linguogingival groove

@bratdoc: i agree with your answer but asda key is far sightedness. Is that we both are understanding something wrong.

A slight detachment of the retina results in a decrease of length from the optical center, and the subject therefore exhibits
1.Near sightedness--------answer
2.Far sightedness
3.Strabismus
4.Nystagmus

Yes Near Sightedness is exactly what i think the answer is!! At least someone is on the same boat!😉 i thought i was thinking weird!

@Svetlana Thanks a ton!👍👍


Which of the following muscles is totally denervated as a result of a section of spinal nerve C5?
1.trapezius
2.Teres Major
3.Subscapularis-----MY ANSWER
4.Rhomboid Major----ASDA ANSWER
5.Latissimus dorsi

Can someone clarify this?😕

 

[bratdoc]

everyone enjoying their Sunday it seems! no one around!

 

[teethie]

yeah, this thread is quiet today.
please answer these ques:

1) which pathway relays conscious proprioceptive information to the medulla?

2) which muscle is medial rotator at gleno- humeral joint?

3) touch receptors most numerous per unit area in th emucosa of:
a) hard palate
b)tip of tongue

4)mature dental pulp has connective tissue?
a) dense
b) loose

everyone enjoying their Sunday it seems! no one around!

 

[bratdoc]

yeah, this thread is quiet today.
please answer these ques:

1) which pathway relays conscious proprioceptive information to the medulla?
Fasciculus gracilis!

2) which muscle is medial rotator at gleno- humeral joint? Pectolais Major, Subscapularis, teres major??

3) touch receptors most numerous per unit area in th emucosa of:
a) hard palate
b)tip of tongue

4)mature dental pulp has connective tissue?
a) dense
b) loose---I think so

Which of the following muscles is totally denervated as a result of a section of spinal nerve C5?
1.trapezius
2.Teres Major
3.Subscapularis-----MY ANSWER
4.Rhomboid Major----ASDA ANSWER
5.Latissimus dorsi

Can someone clarify this?

 

[wdent]

yeah, this thread is quiet today.
please answer these ques:

1) which pathway relays conscious proprioceptive information to the medulla?

2) which muscle is medial rotator at gleno- humeral joint?-

3) touch receptors most numerous per unit area in th emucosa of:
a) hard palate
b)tip of tongue.....answer

4)mature dental pulp has connective tissue?
a) dense
b) loose....Answer
🙂

 

[teethie]

thank u bratdoc and wdent,
bratdoc, i do not know the reasoning of your question, but no one has replied to it and you have marked it so Bold , now i will look into it and post whatever i find abt it.
I know it is discouraging if we do not get the answers for our queries but we answer to everyones queries👎

 

[bratdoc]

thank u bratdoc and wdent,
bratdoc, i do not know the reasoning of your question, but no one has replied to it and you have marked it so Bold , now i will look into it and post whatever i find abt it.
I know it is discouraging if we do not get the answers for our queries but we answer to everyones queries:thumbdown

I agree Teethie it IS upsetting!

 

[elmos]

Which of the following muscles is totally denervated as a result of a section of spinal nerve C5?
1.trapezius
2.Teres Major
3.Subscapularis-----MY ANSWER
4.Rhomboid Major----ASDA ANSWER
5.Latissimus dorsi

Can someone clarify
i think both of them are right answer but i couldn't find why they choose rhomboid major🙁
i agree with wdent i think pulp is loose even if it's mature

 

[teethie]

Thank u elmos for your confirmation.

@bratdoc: answer is rhomboid major. see the link of innervations.

Which of the following muscles is totally denervated as a result of a section of spinal nerve C5?
1.trapezius
2.Teres Major
3.Subscapularis--this is supplied by UPPER SUBSCAPULAR NERVE WHICH IS FORMED BY C5,C6 (POSTERIOR CORD)
4.Rhomboid Major----ASDA ANSWER🙂 because it is supplied by dorsal scapular nerve formed by C5 only. if C5 nerve gets denervated then this is the muscle affected.
5.Latissimus dorsi

http://books.google.ca/books?id=7SZWRe2OBlgC&lpg=PA450&dq=NERVE%20C5%20%20SUPPLY%20RHOMBOIDS%20SUBSCAPULARIS&pg=PA450#v=onepage&q&f=false

 

[bratdoc]

Thank u elmos for your confirmation.

@bratdoc: answer is rhomboid major. see the link of innervations.

Which of the following muscles is totally denervated as a result of a section of spinal nerve C5?
1.trapezius
2.Teres Major
3.Subscapularis--this is supplied by UPPER SUBSCAPULAR NERVE WHICH IS FORMED BY C5,C6 (POSTERIOR CORD)
4.Rhomboid Major----ASDA ANSWER🙂 because it is supplied by dorsal scapular nerve formed by C5 only. if C5 nerve gets denervated then this is the muscle affected.
5.Latissimus dorsi

http://books.google.ca/books?id=7SZWRe2OBlgC&lpg=PA450&dq=NERVE%20C5%20%20SUPPLY%20RHOMBOIDS%20SUBSCAPULARIS&pg=PA450#v=onepage&q&f=false

Thanks Elmos and Teethie!!

 

[teethie]

Did my postor link really solve your confusion or not? becuase if not, then others can still comment on it for correction.

Thanks Elmos and Teethie!!

 

[bratdoc]

Did my postor link really solve your confusion or not? becuase if not, then others can still comment on it for correction.

Yes teethie thank you!...but i also checked on Wiki(wonder why this did not come to my mind before😀) apparently Rhomboid major is supplied by C4 and C5(C5 being the MAIN supply) and subscapularis by C5 and C6... so since C5 is the MAIN for Rhomboid Major hence the answer!

 

[bratdoc]

Just wondering is there any relation between Purine/pyrimidine content of DNA and pH of the environment? Cant seem to recall

 

[butterfly22]

Just wondering is there any relation between Purine/pyrimidine content of DNA and pH of the environment? Cant seem to recall

all i can recall is dat there r triple bonds b/w G and C which tend to stabalize the DNA structure better dan A and T which have double bonds.. and moreover if GC content is increased the boiling point of DNA increases...
dont know bout the PH....???
correct me if wrong..🙂

 

[teethie]

yes, i agree with butterfly22.
als i remember reading that high DNA content leads to high ph. check latest released papers, you may find something similar.
correct me i f wrong.

Just wondering is there any relation between Purine/pyrimidine content of DNA and pH of the environment? Cant seem to recall

 

[ibeflossin]

yes, i agree with butterfly22.
als i remember reading that high DNA content leads to high ph. check latest released papers, you may find something similar.
correct me i f wrong.

it really depends on the pK of DNA, which depends on the base composition. i believe it has to do more with the base composition than anything. so if you have more bases, you are likely to have a higher pH (which is more basic) so the answer above makes sense.
http://www.answerbag.com/q_view/26506#ixzz0ylw45akw​

 

[bratdoc]

Thanks Butterfly22, Teethie and Ibeflossin

So does that mean in a very alkaline pH all the bases are increased? and Not just either Purines or just Pyrimidines?!

 

[teethie]

bratdoc, purines and pyrimidines are forming the bases of dna so what do u mean when u say not just purines or pyrimidines....😕

Thanks Butterfly22, Teethie and Ibeflossin

So does that mean in a very alkaline pH all the bases are increased? and Not just either Purines or just Pyrimidines?!

 

[bratdoc]

bratdoc, purines and pyrimidines are forming the bases of dna so what do u mean when u say not just purines or pyrimidines....😕

What i mean is that there is no such thing that Purines will make DNA more acidic and Pyrimidines will make DNA more basic? Or Vice vera? Right?

 

[teethie]

ok. yes u r right, i did not read it anywhere so far.

What i mean is that there is no such thing that Purines will make DNA more acidic and Pyrimidines will make DNA more basic? Or Vice vera? Right?

 

[bratdoc]

ok. yes u r right, i did not read it anywhere so far.

Thanks!

 

[deck]

Which of the following muscles is totally denervated as a result of a section of spinal nerve C5?
1.trapezius
2.Teres Major
3.Subscapularis-----MY ANSWER
4.Rhomboid Major----ASDA ANSWER
5.Latissimus dorsi

Can someone clarify this?


I think because subscapularis m is innervated by C567, but rhomboid major is innervated by C5 only,

Plz correct me if I am wrong thanks ^^😍

 

[deck]

A broad, flat facet existing on the outer aspect of the mesiolingual cusp of a maxillary first molar, and running in a mesiolingual to distofacial direction, was probably caused by which of the following contacting movements?
A) Lateral protrusive
B) Working
C) Non-working
D) Protrusive

What does that mean run in the ML and DF?? Does it mean cusp of ML of max molar or mand molar 😕

could anyone help me....My exam will be in 2 weeks >< Thanks

 

[drdds3]

2% glutaraldehyde is used as?
a.disinfectant b.immersion agent c.hand wash

 

[anniemirza]

2% glutaraldehyde is used as?
a.disinfectant b.immersion agent c.hand wash

its a disinfectant.

 

[drdds3]

2.] shigella resides in which nervous system
A] cranial B] sensory C] motor
3)] reduced inter condylar distance seen in
A] long cusps B] short cusps
4)crypts of liberkuhn is due to in folding of
a.laminapropria
b.muscular extern
c.muscular mucosa
thank you in advance

 

[teethie]

ans: disinfectant

2% glutaraldehyde is used as?
a.disinfectant b.immersion agent c.hand wash

 

[anniemirza]

hey guys...how important is brain and nervous system...lik how many questions can v expect from it in da exm?

 

[pb2007]

2% glutaraldehyde is used as?
a.disinfectant b.immersion agent c.hand wash

disinfectant http://www.cdc.gov/hicpac/Disinfection_Sterilization/3_2contaminatedDevices.html

as immersion agent 2.5% glutaraldehyde for 10 hrs
http://forums.mycotopia.net/contamination-pests-bugs/5208-sterilants-disinfectants-primer.html

 

[pb2007]

2.] shigella resides in which nervous system
A] cranial B] sensory C] motor
3)] reduced inter condylar distance seen in
A] long cusps B] short cusps
4)crypts of liberkuhn is due to in folding of
a.laminapropria
b.muscular extern
c.muscular mucosa..............answer
thank you in advance

plz correct if wrong

 

[anniemirza]

Between the intestinal villi we see the openings of simple tubular glands, the crypts of Lieberkühn. They extend through the lamina propria down to the muscularis mucosae.
http://www.lab.anhb.uwa.edu.au/mb140/CorePages/GIT/git.htm

 

[anniemirza]

2.] shigella resides in which nervous system
A] cranial B] sensory C] motor
ANSWER-SENSORY
Shingles resides in a dermatome...which is sensory.

 

[teethie]

anniemirza, can u please post the link for shigella residence?

2.] shigella resides in which nervous system
A] cranial B] sensory C] motor
ANSWER-SENSORY
Shingles resides in a dermatome...which is sensory.

 

[anniemirza]

2.] shigella resides in which nervous system
A] cranial B] sensory C] motor
3)] reduced inter condylar distance seen in
A] long cusps B] short cusps
4)crypts of liberkuhn is due to in folding of
a.laminapropria
b.muscular extern
c.muscular mucosa
thank you in advance

anniemirza, can u please post the link for shigella residence?


REF: DECKS 2010

 

[teethie]

thank u🙂

anniemirza, can u please post the link for shigella residence?


REF: DECKS 2010

 

[bratdoc]

A broad, flat facet existing on the outer aspect of the mesiolingual cusp of a maxillary first molar, and running in a mesiolingual to distofacial direction, was probably caused by which of the following contacting movements?
A) Lateral protrusive
B) Working
C) Non-working
D) Protrusive

What does that mean run in the ML and DF?? Does it mean cusp of ML of max molar or mand molar 😕

could anyone help me....My exam will be in 2 weeks >< Thanks

This is one of those regular Working/Non-working movement questions... it is just that the language is a bit twisted and there is no diagram to confuse you... While doing this question just make a rough image in your mind of a maxillary arch and then follow the direction which they are trying to tell you... the facet is caused by the movement of the mandibular cusp though... so on the Maxillary arch image just make an arrow of the direction where the mandibular cusp will move ..... it is the same question but in different words!

 

[teethie]

@anniemirza, i could not find it in decks 2010.
hope u r not confusing it with shingles.

@drdds3: u r asking about shigella right...

anniemirza, can u please post the link for shigella residence?


REF: DECKS 2010