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.

 

[dentluv]

the sympathetic innervation to head and neck is distributed via:

1- blood vessels
2- facial planes
3- lymphatics
4- hyoid musculature
5- CN III, VII, IX and X

Postganglionic fibers from superior cervical ganglion travel via internal carotid artery to the head & neck region.
So I think the answer should be [1]-blood vessels

 

[pbkal]

the sympathetic innervation to head and neck is distributed via:

1- blood vessels
2- facial planes
3- lymphatics
4- hyoid musculature
5- CN III, VII, IX and X

-answer

pls correct if wrong

 

[pbkal]

Postganglionic fibers from superior cervical ganglion travel via internal carotid artery to the head & neck region.
So I think the answer should be [1]-blood vessels

i think u r right.....

 

[uabsfm]

in right lateral excursion, the mesiofacial cusp of the max 1st molar passes through which groove of the mandibular 1st molar?
a.lingual
b.central
c.mesiofacial

 

[uabsfm]

hypomineralized areas which extend from dej to srface of enamel called
a.enamel lamelllae
b. enamel rods
c. enamel spindles

 

[uabsfm]

plz answer about most powerful muscle of mastication?
is it temporalis or massater?

 

[indiandentist89]

When water content is less means more of the solute particles & so more osmolarity. In the case of sweating more water is lost than other particles like sodium,Cl etc so more osmolarity .That is osmolarity is increased but volume [more of water] is decreased.So I believe the ans for Q1 is [1]
2. for this I think the ans should be [2] since most of the substances are reabsorbed in Prox.con.tubule.
If I am wrong please correct,thanks

This is mentione d very clearly as the osmolarity remains the same as water absorption keeps pace with Sodium

 

[uabsfm]

which of the following cytokines stimulates b lymphocytes to differentiate into plasma cells?
IL1
IL2
IL3
IL4
IL5

slight detachment of retina results in a decrease in lenght from the optic center and the subject exhibits
a. near sightedness
b.far sightedness
c.strabismus
d.nystagmus

which relation ship results in one maxillary teeth contacting two mandibular teeth in the intercuspal position?

a. balanced occlusion
b.cusp fossae -cusp fossae
c.cusp fossae -cusp marginal ridge
d.canine protected occlusion
e. anterior protected occlusion

oral micro organisms usually reside in areas of the oral cavity where O2 is limited , they metabolise primarily by
a. fermention
b.aerobic respiration
c.anaerobic respiration
d.nitrogen fixation

which of the following describes the axial inclination of the palatal root of maxillary second molar?
vertical
mesial and lingual
mesial and facial
distal and facial
distal and lingual

on the crown of an incisior which feature separates th labial lobes?
a) mammelons
b)lingual groove
c)facial developmental depression

which of the following groove that originates in mesial pit and extends toward MB line angle on maxillary premolars?
central
MB secondary
MB triangular
mesial marginal
ML tiangular

 

[vibhakar]

2.xerostomia is most commonly affects which salivary gland?
a.parotid
b.submandibular

 

[vibhakar]

Which glands are the part of Anterior Triangle ?
1.) Submandibular
2.)thyroid
3.) Parathyroid
4.) All
5.) Only 1 & 2

 

[vibhakar]

Which of the following is an antimicrobial agent that primarily inactivates cellular DNA

1)Phenols
2)Chlorhexidine
3)Ethylene oxide
4)70 percent isopryl alcohol
5)Alkaline glutaraldehyde

 

[vibhakar]

The sympathetic innervation to structures of the head and neck is distributed via the
a) blood vessels
b) fascial planes
c) lymphatic vessels
d) hyoid musculature
e) cranial nerves III, VII, IX and X

 

[indian dental]

Which of the following is an antimicrobial agent that primarily inactivates cellular DNA

1)Phenols
2)Chlorhexidine
3)Ethylene oxide
4)70 percent isopryl alcohol
5)Alkaline glutaraldehyde

ethylene oxide

 

[indian dental]

2.xerostomia is most commonly affects which salivary gland?
a.parotid
b.submandibular

submandibular??? - As it is the one which produces max saliva.

 

[pbkal]

hypomineralized areas which extend from dej to srface of enamel called
a.enamel lamelllae-answer
b. enamel rods
c. enamel spindles

sure

 

[pbkal]

plz answer about most powerful muscle of mastication?
is it temporalis or massater?

masseter

 

[pbkal]

submandibular??? - As it is the one which produces max saliva.

submandibular is ans.

 

[pbkal]

in right lateral excursion, the mesiofacial cusp of the max 1st molar passes through which groove of the mandibular 1st molar?
a.lingual -answer
b.central
c.mesiofacial

sure.

 

[uabsfm]

I have one doubt
in the decks it is mentioned that
-in a working side movment the mesiobuccal cusp of the maxillary 1st molar passes through the lingual groove of the mandibular 1st molar

and then in the second line it is mentioned that
- in a nonworking side movment the the mesiobuccal cusp of the maxillary 2nd molar passes through the buccal groove of the mandibular 2nd molar

I think something is wrong in this can somebody expalin to me why its like this?

thanx in advance

 

[vibhakar]

which is sympathetic end organ?

 

[vibhakar]

difference between primary max. second molar and permanent first molar?
1)primary tooth has much narrower measurement at CEJ compared to its contact area
2)permanent tooth has rhomboidal occlusal outline
3)cusp of carabelli

 

[vibhakar]

which is most likely shown as cause of abscess?
agenesis
dilaceration
concresence
dens in dente
enamel pearls

 

[indian dental]

which is most likely shown as cause of abscess?
agenesis
dilaceration
concresence
dens in dente
enamel pearls

dens in dente

 

[indian dental]

difference between primary max. second molar and permanent first molar?
1)primary tooth has much narrower measurement at CEJ compared to its contact area
2)permanent tooth has rhomboidal occlusal outline
3)cusp of carabelli


answer

 

[ddsaspi]

hey guys, answer is petrotympanic ...it is only one lying in temporal bone.
jugular- between temporal and occipital
infraorbital- between frontal and maxilla

I would like to correct that the answer is Infraorbital foramen,as it is an extension of the Infraorbital canal into the facial aspect of the maxillary bone. As for the petrotympanic is a fissure is a part of squamotympanic fissure located b/w spine of sphenoid, mandibular fossa and tympanic plate of temporal bone upto ant. margin of ext. acoustic meatus . as for other choices jugular foramen is formed by jugular process of occipital bone & jugular jugular fossa of petrous temporal.

 

[ddsaspi]

difference between primary max. second molar and permanent first molar?
1)primary tooth has much narrower measurement at CEJ compared to its contact area
2)permanent tooth has rhomboidal occlusal outline
3)cusp of carabelli


answer

Correct answer would be
1)primary tooth has much narrower measurement at CEJ compared to its contact area, as the cusp of carabelli like 5th cusp is very much present on pri max 2nd molar, and the occlusal outline is also rhomboidal.

 

[ddsaspi]

submandibular is ans.

I would just like to know the reason of submandibular gland being affected leading to decreased volume, is the primary cause of xerostomia. As the secretory cells of the parotid gland are most radiosensitive and radiation causes inflammation and vascular damage in the parenchyma.
A decrease in salivary flow can occur within the first week of radiation, with the saliva becoming more viscous and acidic. There are also changes in the electrolyte and protein content of the saliva which in turn affects the microbial flora and the propensity for tooth decay. The degree of damage depends on how many of the major glands are in the radiation field and the damage increases with total dose of radiation.The initial volume, particularly of the parotid glands, will also affect the degree of xerostomia post-radiation.

 

[ddsaspi]

If intercondylar distance decreases
a) Post cusp become shorter
b) Post cusp become taller
c) Working and nonworking angle decreases
d) Working and nonworking angle increase

 

[pbkal]

If intercondylar distance decreases
a) Post cusp become shorter
b) Post cusp become taller
c) Working and nonworking angle decreases
d) Working and nonworking angle increase

ans should be either (b) or (d).pls correct if wrong....

 

[pbkal]

which of the following cytokines stimulates b lymphocytes to differentiate into plasma cells?
IL1
IL2
IL3
IL4-answer
IL5

slight detachment of retina results in a decrease in lenght from the optic center and the subject exhibits
a. near sightedness-answer
b.far sightedness
c.strabismus
d.nystagmus

which relation ship results in one maxillary teeth contacting two mandibular teeth in the intercuspal position?

a. balanced occlusion
b.cusp fossae -cusp fossae -answer
c.cusp fossae -cusp marginal ridge
d.canine protected occlusion
e. anterior protected occlusion

oral micro organisms usually reside in areas of the oral cavity where O2 is limited , they metabolise primarily by
a. fermention-answer
b.aerobic respiration
c.anaerobic respiration
d.nitrogen fixation

which of the following describes the axial inclination of the palatal root of maxillary second molar?
vertical
mesial and lingual
mesial and facial
distal and facial
distal and lingual

on the crown of an incisior which feature separates th labial lobes?
a) mammelons-answer
b)lingual groove
c)facial developmental depression

which of the following groove that originates in mesial pit and extends toward MB line angle on maxillary premolars?
central
MB secondary
MB triangular
mesial marginal
ML tiangular

pls correct wrong answers....

 

[pbkal]

can anyone pls answer these questions-


1) the pathogenesis accounting for most cases of Down Syndrome is which of the following ?
a) Deletion
b) Mosaicism
c) Translocation
d) Nondisjunction
e) Autosomal recessive inheritance
2) the most prominent mechnism of spread of varicella zoster in a susceptible population is by which of the following routes ?
a) Parenterally
b) Insect vectors
c) Oral - anal
d) Respiratory
e) Direct skin-to-skin contact
3) Immunologic injury that involves the activation of complement as an important event in producing damage to tissue is found in which of the following reactions ?
a) Delayed type hypersenstivitity
b) Anaphylactice type hypersensitivity
c) Immune-complex mediated
d) Antibody-dependent cell-mediated cytotoxicity
4) During which of the following stages of viral replication would a virus be susceptible to the secretory IgA ?
a) Eclipse
b) Attachment
c) Maturation
d) Viral protein synthesis
e) Viral nucleic acid synthesis
5) the most effective means of preventing disease transmission in the dental office is based on which of the following concepts ?
a) Asepsis
b) Disinfection
c) Sterilization
d) Barrier techniques
e) Universal precautions
6) In granulomatous inflammation which of the following processes is most likely to predominate ?
a) Exudation
b) Congestion
c) Diapedesis
d) Fibroplasia
e) Transudation

 

[pbkal]

can anyone pls answer these questions...

1) the highest and sharpest cusp on the deciduous mandibular first molar is the
a) mesiolingual
b) distolingual
c) mesiobuccal
d) distobuccal
2) concerning teeth in contact the rounding of the mesiofacial and distofacial line angles contributes to the formation of which of the following embrasures ?
a) Facial
b) Lingual
c) Cervical
d) Occlusal or incisal
e) Gingival
3) Which of the following statements is always true of dental hypoplasia ?
a) Affected teeth are always stained in varying hues.
b) It is an inevitable consequence of water fluoridation
c) It is more common in adult females than in teenage males.
d) If it is going to occur, it will be present when the teeth erupt
4) which of the following anatomical entities of the maxillary first molar slides through the angled sulcus found on the occlusal surface of a mandibular first molar ?
a) Mesial marginal ridge
b) Distal marginal ridge
c) Mesiobuccal cusp
d) Distobuccal cusp
e) Oblique ridge

5) which of the following marginal ridges have little or no contact in ideal centric and eccdentric maxillomandibular contact relationships ?
a) Distal of maxillary second premolar
b) Distal of mandibular first premolar
c) Distal of mandibular second premolar
d) Mesial of maxillary canine
e) Mesial of Mandibular first premolar

1. (a) and (b)
2. (a) and (d)
3. (b), (c) and (d)
4. (b), (c) and (e)
5. (d) and (e)

 

[pb2007]

) the pathogenesis accounting for most cases of Down Syndrome is which of the following ?
a) Deletion
b) Mosaicism
c) Translocation
d) Nondisjunction...........answer
e) Autosomal recessive inheritance
2) the most prominent mechnism of spread of varicella zoster in a susceptible population is by which of the following routes ?
a) Parenterally
b) Insect vectors
c) Oral - anal
d) Respiratory
e) Direct skin-to-skin contact ....answer
Immunologic injury that involves the activation of complement as an important event in producing damage to tissue is found in which of the following reactions ?
a) Delayed type hypersenstivitity
b) Anaphylactice type hypersensitivity
c) Immune-complex mediated.....answer
d) Antibody-dependent cell-mediated cytotoxicity
5) the most effective means of preventing disease transmission in the dental office is based on which of the following concepts ?
a) Asepsis
b) Disinfection
c) Sterilization.....answer
d) Barrier techniques
e) Universal precautions

 

[dentluv]

2) the most prominent mechnism of spread of varicella zoster in a susceptible population is by which of the following routes ?
a) Parenterally
b) Insect vectors
c) Oral - anal
d) Respiratory-Ans
e) Direct skin-to-skin contact

 

[pbkal]

2) the most prominent mechnism of spread of varicella zoster in a susceptible population is by which of the following routes ?
a) Parenterally
b) Insect vectors
c) Oral - anal
d) Respiratory-Ans
e) Direct skin-to-skin contact

thanx for the ans.got doubt that (e) is also a mechanism of spread.

 

[pbkal]

2) When viewed from mesial, where is the furcation between lingual root and mesiobuccal root located?
a toward facial
b centered faciolingually (not sure)
c toward lingual

what is the ans??

 

[Twinkle1]

2) When viewed from mesial, where is the furcation between lingual root and mesiobuccal root located?
a toward facial
b centered faciolingually
c toward lingual => ANSWER

 

[Twinkle1]

If intercondylar distance decreases
a) Post cusp become shorter
b) Post cusp become taller
c) Working and nonworking angle decreases
d) Working and nonworking angle increase

 

[Twinkle1]

1) the highest and sharpest cusp on the deciduous mandibular first molar is the
a) mesiolingual
b) distolingual
c) mesiobuccal
d) distobuccal

2) concerning teeth in contact the rounding of the mesiofacial and distofacial line angles contributes to the formation of which of the following embrasures ?
a) Facial
b) Lingual
c) Cervical
d) Occlusal or incisal
e) Gingival

3) Which of the following statements is always true of dental hypoplasia ?
a) Affected teeth are always stained in varying hues.
b) It is an inevitable consequence of water fluoridation
c) It is more common in adult females than in teenage males.
d) If it is going to occur, it will be present when the teeth erupt

4) which of the following anatomical entities of the maxillary first molar slides through the angled sulcus found on the occlusal surface of a mandibular first molar ?
a) Mesial marginal ridge
b) Distal marginal ridge
c) Mesiobuccal cusp
d) Distobuccal cusp
e) Oblique ridge

Not sure!

5) which of the following marginal ridges have little or no contact in ideal centric and eccdentric maxillomandibular contact relationships ?
a) Distal of maxillary second premolar
b) Distal of mandibular first premolar
c) Distal of mandibular second premolar
d) Mesial of maxillary canine
e) Mesial of Mandibular first premolar

1. (a) and (b)
2. (a) and (d)
3. (b), (c) and (d)
4. (b), (c) and (e)
5. (d) and (e)

 

[vibhakar]

Zygomatico facial & zygomatico temporal are
a. motor branches of 7 nerve
b. sensory b of frontal n.
c. motor b of V3
d. sensory b of V2
e.sensory b of V1

 

[vibhakar]

1. which is the normal flora of gingival sulcus
a- s.actino
b- s.myco
c- s.bacteroide
d- s.mutan

 

[vibhakar]

. Normal clotting time & normal platelet count accompanied by prolonged bleeding time suggest which of the foll. ?
A. Hemophilia
B. Polycythemia vera
C. Thrombocytopenic purpura
D. Excessive aspirin ingestion

 

[vibhakar]

4. What structure causes the bucal vestibule to decrease in size when the jaw is opened wide?
a. Condyle-
b. coronoid fossa
c. hamular process
d. styloid process

 

[vibhakar]

free radical injury ocuurs due to all except?
ischaemia
toxins
age

 

[vibhakar]

1. what is the inclination of maxillary molar crown ?
a. mesially and lingually
b. facially and distally
c. facially and mesially
d. distally and lingually

 

[vibhakar]

contact area that is most nearly circular is located on the crown of which of the foll. premolars :
a.mesial of 1st
b.distal of 1st
c.mesial of second
d.distal of second

 

[vibhakar]

Anyone knows which is the right answer for lymphatic drainage of tooth #32?
a - deep cervical
b- submandibular
c- superficial cervical
d- submental
e- buccal

 

[vibhakar]

Mythyl xanthines such as caffeine and theophylline enhance lipolysis in adipose tissue by ?

a.including adenylate cyclase synthesis
b.including triglyceride lipase synthesis
c. inhibiting cyclic AMP
d.dirctly activating an intracellur protein kinase
e.enhancing the binding of epinephrine to an extracellular membrane receptor

 

[vibhakar]

which of the following is the primary site for Ghons complex:

1- trachea and bronchus
2- parenchyma of lower lobe
3- parenchyma of ubber lobe
4- trachea and hilar lymph nodes
5- subplueral parenchyma and hilar lymph nodes

 

[pbkal]

2) When viewed from mesial, where is the furcation between lingual root and mesiobuccal root located?
a toward facial
b centered faciolingually
c toward lingual => ANSWER

thanks for the answers.but,r u sure of this answer??i tried to refer,but couldnt get it anywhere.