anatomy questions

[pbkal]

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hai
can anyone please answer these questions-
1)infection from saggital sinus drains into??
2)spread of infection from facial vein to cavernous sinus is through??

 

[pbkal]

1)a distinguishing characteristic of a maxillary first premolar which identifies it as right or left is the
a)height of the lingual cusp
b)mesial inclination of the lingual cusp
c)flattened area beneath the contact on the distal surface
d)greater length of the distal cusp ridge on the facial cusp
e)greater length of the mesial cusp ridge on the lingual cusp.

2)which of the following is presently being used in immunotherapy of cancer?
a)TPI
B)BCG
C)SBE
D)OX19
E)H AND O

 

[ivanabe]

1)a distinguishing characteristic of a maxillary first premolar which identifies it as right or left is the
a)height of the lingual cusp
b)mesial inclination of the lingual cusp
c)flattened area beneath the contact on the distal surface
d)greater length of the distal cusp ridge on the facial cusp
e)greater length of the mesial cusp ridge on the lingual cusp.

not sure about the other one

 

[pbkal]

not sure about the other one

for max 1st premolar,the mesial cusp ridge is longer than the distal...characteristic feature of max.1stpremolar.
but ans is given as option (b).
if anyone can clear this doubt...?

 

[dentimax]

mandibular pm, which one?
mand 1pm has a transverse ridge, mand 2nd doesnt.

 

[dentimax]

lingual cusp tip located toward mesial half of lingual surface. cusp inclines are very steep.

 

[pbkal]

lingual cusp tip located toward mesial half of lingual surface. cusp inclines are very steep.

thanks for clearing the doubt...

 

[pbkal]

in severe degenerative disease of liver,such as advanced alcoholic cirrhosis,a marked deficiency of which of the following factors essential to blood coagulating mechanisms is likely??
a)prothromboplastin
b)prothrombin
c)thrombin
d)vitamin K
e)fibrinogen

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

 

[pb2007]

in severe degenerative disease of liver,such as advanced alcoholic cirrhosis,a marked deficiency of which of the following factors essential to blood coagulating mechanisms is likely??
a)prothromboplastin
b)prothrombin
c)thrombin
d)vitamin K
e)fibrinogen

1)a and e
2)b and c....ans
3)b and e
4)c and d.
i think this is th ans coz liver produces factor 2, 5,7,9,10,11,12,so choice b and c seems most appropriate,plz correct if wrong .

 

[pbkal]

in severe degenerative disease of liver,such as advanced alcoholic cirrhosis,a marked deficiency of which of the following factors essential to blood coagulating mechanisms is likely??
a)prothromboplastin
b)prothrombin
c)thrombin
d)vitamin K
e)fibrinogen

1)a and e
2)b and c....ans
3)b and e
4)c and d.
i think this is th ans coz liver produces factor 2, 5,7,9,10,11,12,so choice b and c seems most appropriate,plz correct if wrong .

U R RIGHT.thanks for the ans.actually i got confused with vitamin K source.i thought liver is also a source of vitamin K.

 

[pbkal]

hi guys
i dont have the key for these questions,so just want to confirm my answers.

1)EACH OF THE FOLLOWING IS A FUNCTION OF THE PERRIODONTAL LIGAMENT EXCEPT
a)sensory
b)nutritional
c)supportive via the fibers
d)formative via its cellular elements
e)maintainance of the epithelial attachment

2)embrassures r generally larger on the lingual than on the facial with the contact area within the facial moiety except between maxillary
a)premolars
b)central incisors
c)first and second molars
d)first premolar and canine
e)first molar and second premolar

3)carious lesions r least likely to occur in or on
a)pits
b)fissures
c)cusp tips
d)facial surfaces
e)proximal surfaces

for 1-(b)
2-(e)
3-(c)
pls correct if wrong.

 

[dentimax]

1)EACH OF THE FOLLOWING IS A FUNCTION OF THE PERRIODONTAL LIGAMENT EXCEPT
a)sensory
b)nutritional
c)supportive via the fibers
d)formative via its cellular elements
e)maintainance of the epithelial attachment- answ.

2)embrassures r generally larger on the lingual than on the facial with the contact area within the facial moiety except between maxillary
a)premolars
b)central incisors
c)first and second molars- answ
d)first premolar and canine
e)first molar and second premolar

3)carious lesions r least likely to occur in or on
a)pits
b)fissures
c)cusp tips- answ.
d)facial surfaces
e)proximal surfaces

for 1-(b)
2-(e)
3-(c)
pls correct if wrong.

1- e
2- c
3- c

 

[pbkal]

which tissue is metabolically inert(not in dynamic equilibrium with blood and metabolites)?
a)bone
b)dentin
c)adipose
d)connective
e)none of the above

what is the ans??

 

[pbkal]

1)EACH OF THE FOLLOWING IS A FUNCTION OF THE PERRIODONTAL LIGAMENT EXCEPT
a)sensory
b)nutritional
c)supportive via the fibers
d)formative via its cellular elements
e)maintainance of the epithelial attachment- answ.

2)embrassures r generally larger on the lingual than on the facial with the contact area within the facial moiety except between maxillary
a)premolars
b)central incisors
c)first and second molars- answ
d)first premolar and canine
e)first molar and second premolar

3)carious lesions r least likely to occur in or on
a)pits
b)fissures
c)cusp tips- answ.
d)facial surfaces
e)proximal surfaces

for 1-(b)
2-(e)
3-(c)
pls correct if wrong.

1- e
2- c
3- c

hi dentimax!r u sure of all the answers.......?

 

[hanan]

which of the following is presently being used in immunotherapy of cancer?
a)TPI
B)BCG: Answer
C)SBE
D)OX19
E)H AND O

http://www.cancer.org/docroot/ETO/c...therapy_for_Specific_Cancers.asp?sitearea=ETO

Please correct me if I am wrong.

 

[pbkal]

which of the following is presently being used in immunotherapy of cancer?
a)TPI
B)BCG: Answer
C)SBE
D)OX19
E)H AND O

http://www.cancer.org/docroot/ETO/c...therapy_for_Specific_Cancers.asp?sitearea=ETO

Please correct me if I am wrong.

u r right.i just wanted to confirm the answer.thanks.

 

[pbkal]

hi guys
what is the role of vitamin A in enamel development??

 

[pbkal]

which of thefollowing muscles or muscle fibers are elevators of the mandible?
a)medial pterygoid muscle
b)lateral pterygoid
c)anterior fibers of the temporal muscle
d)posterior fibers of the temporal

1)a and c
2)a,c and d
3)b,c and d
4)b and d
5)all the above.

what is the ans?(1) or (2)??

 

[drbeevee]

hi guys
what is the role of vitamin A in enamel development??

vit A is required for maintaining healthy epithelial tissues.
enamel is formed from ameloblasts which are epithelial in origin(formed from the tooth germ which forms as a result of inpocketing of oral epithelium into the underlying mesenchyme)

therefore normal production of enamel will require vit A
hope this helps

 

[drbeevee]

which of thefollowing muscles or muscle fibers are elevators of the mandible?
a)medial pterygoid muscle
b)lateral pterygoid
c)anterior fibers of the temporal muscle
d)posterior fibers of the temporal

1)a and c- ans
2)a,c and d
3)b,c and d
4)b and d
5)all the above.

what is the ans?(1) or (2)??

as posterior fibres of temporalis are for retrusion of the md.

 

[pbkal]

vit A is required for maintaining healthy epithelial tissues.
enamel is formed from ameloblasts which are epithelial in origin(formed from the tooth germ which forms as a result of inpocketing of oral epithelium into the underlying mesenchyme)

therefore normal production of enamel will require vit A
hope this helps

thanks drbeevee.

 

[pbkal]

as posterior fibres of temporalis are for retrusion of the md.

yess!!i thought the same.its a ques from previous papers.and ans is given as (2).

 

[pbkal]

hi guys!!
dont have the key for these questions.they from previous papers.please post the correct answers.

1)a max 1st PM may be identified by
a)marked mesial concavity in the cervical area
b)deep sulcus
c)long central groove
d)short central groove
e)single pulp canal

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

2)the tooth root is attached to the alveolar process.what structures are included in the attachment?
a)dentin
b)cementum
c)bundle bone
d)lamina dura
e)epithelial attachment
f)periodontal ligament
1)a,c and d
2)a,c and f
3)b,c and e
4)b,c and f
5)d,e and f

3)calcification of the roots of the primary dentition is normally completedat what age?
a)1-2yrs
b)3-4yrs
c)5-6yrs
d)7-8yrs
e)none of the above

 

[twinklestar123]

hey guys,
neeed help... wat is the blood supply to the geniohyoid muscle?

thanks

 

[pbkal]

hey guys,
neeed help... wat is the blood supply to the geniohyoid muscle?

thanks

geniohyoid is supplied by the C1 fibres via hypoglossal nerve.

 

[drbeevee]

hi guys!!
dont have the key for these questions.they from previous papers.please post the correct answers.

1)a max 1st PM may be identified by
a)marked mesial concavity in the cervical area
b)deep sulcus
c)long central groove
d)short central groove
e)single pulp canal

1)a,b and c- ans
2)a,c and e
3)b and d
4)d only
5)d and e

2)the tooth root is attached to the alveolar process.what structures are included in the attachment?
a)dentin
b)cementum
c)bundle bone
d)lamina dura
e)epithelial attachment
f)periodontal ligament
1)a,c and d
2)a,c and f
3)b,c and e
4)b,c and f- ans
5)d,e and f

3)calcification of the roots of the primary dentition is normally completedat what age?
a)1-2yrs
b)3-4yrs
c)5-6yrs
d)7-8yrs
e)none of the above

calcification of the roots of the primary dentition is completed 1-2yrs after eruption.

 

[drbeevee]

hey guys,
neeed help... wat is the blood supply to the geniohyoid muscle?

thanks

sublingual artery
can anyone confirm this??

 

[pbkal]

sublingual artery
can anyone confirm this??

geniohyoid is supplied by lingual artery and submental artery.

 

[pbkal]

calcification of the roots of the primary dentition is completed 1-2yrs after eruption.

so 3-4 yrs can be the answer,right?

 

[pbkal]

hi guys!!
can anyone please clear this doubt-the embryology of philtrum of upper lip?
is it medial nasal process(medial intermaxillary segment) as given in decks or google??
OR
frontonasal process as given in nbde first aid??

 

[dentgod]

Frontal prominence- forehead n apex of the nose.
medial nasal swellings- mid part of the nose, philtrum of the upperlip, mid portion of the upper jaw and associated gingiva and the primary palate.
lateral nasal swelling- side of the nose.

hi guys!!
can anyone please clear this doubt-the embryology of philtrum of upper lip?
is it medial nasal process(medial intermaxillary segment) as given in decks or google??
OR
frontonasal process as given in nbde first aid??

 

[dentgod]

I think its the lingual artey n I'm not sure about the submental artery. feel free to correct me.

geniohyoid is supplied by lingual artery and submental artery.

 

[pbkal]

I think its the lingual artey n I'm not sure about the submental artery. feel free to correct me.

this ans is from google....

 

[pbkal]

Frontal prominence- forehead n apex of the nose.
medial nasal swellings- mid part of the nose, philtrum of the upperlip, mid portion of the upper jaw and associated gingiva and the primary palate.
lateral nasal swelling- side of the nose.

thanks dentgod..for clearing the doubt...

 

[pbkal]

pls ans this ques-


the maximal number of impulses that a nerve fiber can carry is determined by which??
a)intensity of the stimulus
b)diameter of the nerve fiber
c)duration of the absolute refractory period
d)duration of relative refractory period

 

[pbkal]

pls ans this question-

renal compensation for chronic metabolic alkalosis involves which of the following?
a)inc tubular synthesis of NH3
b)partial reabsorption of the filtered HCO3
c)elevated productioh of new bicarbonate
d)none of the above

 

[mrswinidm]

The maximal number of impulses that a nerve fiber can carry is determined by which??
a)intensity of the stimulus
b)diameter of the nerve fiber
c)duration of the absolute refractory period
d)duration of relative refractory period
Because during the absolute refractory period, no action potential can be initiated regardless of the other parameters.

renal compensation for chronic metabolic alkalosis involves which of the following?
a)inc tubular synthesis of NH3
b)partial reabsorption of the filtered HCO3
c)elevated productioh of new bicarbonate
d)none of the above?
Don't really know the reason. Others does not make sense to me 😀.

 

[dentbaby]

Hi,
Is the answer none of the above???Let me know ..If it is I will send the explanation.

pls ans this question-

renal compensation for chronic metabolic alkalosis involves which of the following?
a)inc tubular synthesis of NH3
b)partial reabsorption of the filtered HCO3
c)elevated productioh of new bicarbonate
d)none of the above

 

[pbkal]

The maximal number of impulses that a nerve fiber can carry is determined by which??
a)intensity of the stimulus
b)diameter of the nerve fiber
c)duration of the absolute refractory period
d)duration of relative refractory period
Because during the absolute refractory period, no action potential can be initiated regardless of the other parameters.

renal compensation for chronic metabolic alkalosis involves which of the following?
a)inc tubular synthesis of NH3
b)partial reabsorption of the filtered HCO3
c)elevated productioh of new bicarbonate
d)none of the above?
Don't really know the reason. Others does not make sense to me 😀.

thanks for the answer....for question 2-ans is given as (b).question from previous papers.even i didnt find any of the options situable...

 

[pbkal]

questions from previous papers.dont have the key for one of the paper,so pls confirm the answers-
1)the protrusive pathway of mandibular cusps on maxillary teeth is toward the
a)facial
b)distal
c)lingual
d)mesial-ans
e)none of the above.

2)when viewed from proximal,which of the following permanent teeth appears to be aligned in its arch with the axial inclination of its roots most nearly vertical?
a)max first molar
b)mand second molar
c)max first premolar
d)max central incisor
e)mand central incisor

3)on which of the following primary molars would a prominent transverse ridge typically occur?
a)max first molar
b)max second molar
c)mand first molar-ans
d)mand second molar

4)which teeth is most likely to resist caries?
a)max central incisor
b)mand canine
c)mand first premolar
d)max lateral incisor

a or b??

5)in mandibular arch,greatest lingual inclination of the crown from its root is seen in a permanent
a)canine
b)third molar-ans
c)first premolar
d)central incis
e)lateral incis

6)based upon morphology,a mesio-occlusal(class II)cavity preparation wud be most difficult in which of the following teeth/
a)primary mand first molar-answer
b)primary mand second molar
c)perman mand first molar
d)perm max second molar

 

[mrswinidm]

2)when viewed from proximal,which of the following permanent teeth appears to be aligned in its arch with the axial inclination of its roots most nearly vertical?
a)max first molar
b)mand second molar
c)max first premolar
d)max central incisor
e)mand central incisor
Ans. Max first premolar (not sure) feel free to correct me.

4)which teeth is most likely to resist caries?
a)max central incisor
b)mand canine
c)mand first premolar
d)max lateral incisor
Ans. B. Canines are the teeth most likely to be the last teeth in the partially edentulous dental arch.

Other answer I agree with you. Good study!

 

[pbkal]

2)when viewed from proximal,which of the following permanent teeth appears to be aligned in its arch with the axial inclination of its roots most nearly vertical?
a)max first molar
b)mand second molar
c)max first premolar
d)max central incisor
e)mand central incisor
Ans. Max first premolar (not sure) feel free to correct me.

4)which teeth is most likely to resist caries?
a)max central incisor
b)mand canine
c)mand first premolar
d)max lateral incisor
Ans. B. Canines are the teeth most likely to be the last teeth in the partially edentulous dental arch.

Other answer I agree with you. Good study!

thanks mrswinidm for the answers.

 

[pbkal]

pls ans this-
1)an oral lesion that may appear as an ulcer,a nodule or a vegetative process and is often mistaken for squamous cell carcinoma is a manifestation of
a)candidiasis
b)trichinosis
c)sporotrichosis
d)histoplasmosis

 

[dentistus]

pls ans this-
1)an oral lesion that may appear as an ulcer,a nodule or a vegetative process and is often mistaken for squamous cell carcinoma is a manifestation of
a)candidiasis
b)trichinosis
c)sporotrichosis
d)histoplasmosis

ans candidiasis

plz correct me if i m wrong

 

[dentistus]

hydrolysis of which struct leads to great decrease in free energy?
options- adp, amp,creatinine phosphate, glucose 6 p, phsphoenol
pyruvate?

pain rec in substantia nigra? or somatosensory cortex?

 

[pbkal]

ans candidiasis

plz correct me if i m wrong

ans is given as histoplasmosis.can anyone explain....
question from previous paper.

 

[pbkal]

previous papers questions-dont have the key.pls confirm the answers.

1)embrassures r generally larger on the lingual than on the facial with the contact area within the facial moiety except between max
a)premolars
b)central incis
c)firat and second molars-answer
d)first premolar and canine
e)first molar and sec premolar

2)carious lesions r least likely to occur in or on
a)pits
b)fissures
c)cusp tips-answer
d)facial surfaces
e)proximal surfaces

3)the permanent ant tooth most often congenitally missing is
a)mand canine
b)max central incis
c)max lateral incisor-answer
d)mand central inc
e)mand lateral inci

4)when viewd from the mesial,a line bisecting the apex and root of max canine
a)also bisects cusp tips
b)passes facial to the cusp tip
c)passes lingual to cusp tip-answer

 

[mrswinidm]

hydrolysis of which struct leads to great decrease in free energy?
options- adp, amp,creatinine phosphate, glucose 6 p, phsphoenol
pyruvate?

pain rec in substantia nigra? or somatosensory cortex?

I also would like to know the answer of the first question. I think the question is asking the hydrolysis of which compound release the greatest amount of energy (ie the free energy G is the greatest decrease). Can anybody explain please..
Pain recognition in somatosensory cortex. Substantia nigra is the mortor area concerning with Parkison's disease.

 

[mrswinidm]

previous papers questions-dont have the key.pls confirm the answers.

1)embrassures r generally larger on the lingual than on the facial with the contact area within the facial moiety except between max
a)premolars
b)central incis
c)firat and second molars-answer
d)first premolar and canine
e)first molar and sec premolar

2)carious lesions r least likely to occur in or on
a)pits
b)fissures
c)cusp tips-answer
d)facial surfaces
e)proximal surfaces

3)the permanent ant tooth most often congenitally missing is
a)mand canine
b)max central incis
c)max lateral incisor-answer
d)mand central inc
e)mand lateral inci

4)when viewd from the mesial,a line bisecting the apex and root of max canine
a)also bisects cusp tips
b)passes facial to the cusp tip
c)passes lingual to cusp tip-answer

All ans. that you choose are perfect for me.

 

[pbkal]

All ans. that you choose are perfect for me.

thanks mrswinidm.

 

[smyle32]

hydrolysis of which struct leads to great decrease in free energy?
options- adp, amp,creatinine phosphate, glucose 6 p, phsphoenol
pyruvate?

pain rec in substantia nigra? or somatosensory cortex?

1.phosphenol pyruvate. energy of hydrolysis for phosphate compounds is given in a table in Kaplan review book,biochem section.phosphenol pyruvate has the highest with -14.8 .