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.

 

[topaiz]

Each of the follwoing is found in retrodiscal pad except:

1- elastic fibers
2- venous plexus
3- collagen fiber
4- hyaline cartilage
5- loose connective tissue

if local anesthetic was deposited in pterygopalatine fossa, which nerve will be anesthetized

1- V1
2- V2
3- V3
4- facial
5- vagus

which of the following is the nerve innervation most thenar muscles

1- ulnar
2- median
3- radial
4- axillary
5- musculocutanuos

which type of connective tissue is found in pulp:

1- loose
2- dense
3- mucoid
4- adipose
5- elastic

The Thenar Muscles

• These muscles (abductor pollicis brevis, flexor pollicis brevis, and opponens pollicis) produce the thenar eminence.

• They are chiefly responsible for the movement known as the opposition of the thumb.
• The pressure that the opposed thumb can exert on a fingertip is enhanced by the reinforcing action of the adductor pollicis and flexor pollicis longus muscles.

• The thenar muscles are supplied by the recurrent branch of the median nerve.

 

[topaiz]

from the occlusa aspect which crown outline of mandibular premolar has pentagonal shape ?
a. Y type second
b. U type second
c. H type second

this has the pentagonal shape

 

[topaiz]

what is the highest risk factor for ovarian cancer?

untreated gonorrhoea
having many children
c)oral contraceptive use
d)follicular cyst of ovary
e)family history

what is main product of nitrogen metabolism found in human urine?
urea
ammonia
creatine
uric acid
creatinine

urea is the answer , why that is the answer why not ammonia?
plz explain

urea only is the major product found in nitrogen metabolism.

 

[topaiz]

from facial view which of the below represents the distal outline of the crown of a mandibular canine from cervical line to contact area?

convex
concave
irregular
straight

convex

 

[topaiz]

which side represents the location of the smallest cusp of the mandibular fisrt molar?

mesiofacial
mesiolingual
distofacial
distolingual

distofacial
in these choices the best option is distofacial as the smallest cusp is distal

 

[topaiz]

1)removal of ant pitatuary gland result in
a.diabetes
b. loss of capacity to oxidise fat
c.loss of capacity to store sugar
d.increase sensitivity to insulin

d.increase sensitivity to insulin
its given in released exam packet i-f year july1982 in biochemistry section

the explanation is as; Growth hormone (GH), or somatotropin, stimulates cellular growth, mitosis, and differentiation, promoting overall tissue and organ growth. GH inhibits ageing via many ways (eg. it inhibits formation of free radicals). GH stimulates skeletal and tissue growth via the polypeptide growth factors – somatomedins (IGF-I, IGF-II), which are produced in the liver. GH also exhibits multiple metabolic effects:
·it increases lipolysis and fat utilization for energy (anti-insulin effect of GH)
·it promotes protein synthesis and deposition acting as a “protein sparer” (insulin-like effect of GH)
·it decreases use of glucose for energy, increases gluconeogenesis, and thus rises blood glucose level (anti-insulin effect of GH)


so if the ant pitutary is removed so it will not have anti insulin effect but has increased susceptibility to insulin as no more gorwth hormone will be released so no lipolysis and so more glycogen formation by the increased effect of insulin.

 

[topaiz]

which portion of TMJ more sensitive to painful stimuli?
a.articular disk
b. articular capsule
c. articular surface
d. condylar cartilage

a.articular disk
this is supplied by the auriculotemporal nerve
correct me if i am wrong

 

[topaiz]

which are the largest incisal or occlusal embrassure in maxillary and mandibular arches ?

its between max canine and 1st Pm

 

[toothfairy482]

Its between max LI and canine

 

[topaiz]

2nd stage of deglutition is under which control?
a. voluntary
b. hypothalamus
c. pontine
d. cortical
e. medullary

there r 4 stages of deglutition and first 2 are voluntary and next 2 are involuntary so i think it shd be a. voluntary

 

[topaiz]

Its between max LI and canine

ya i agree its
max LI and canine but its the largest incisal embrasure.

i told about the occlusal embrasure which is between the max canine and 1st PM

You can check.

 

[topaiz]

which ions impedes absorption of flouride ions in the gut?
a. H and K
b. H &Fe
c. Ca & Fe
d. Na & Ca

acive transport occurs in each of the following except?
collecting duct
bowman's capsule
distal convulated tubule
thick segment of loop of henle
proximal convulated tubule

see this:
http://books.google.com/books?id=vg...&oi=book_result&ct=result&resnum=1#PPA1514,M1

 

[toothfairy482]

INCISAL AND OCCLUSAL is same thing dear.
depends if you are talking about anterior or posterior teeth

 

[dentaram]

see this:
http://books.google.com/books?id=vg...&oi=book_result&ct=result&resnum=1#PPA1514,M1

The absorption of fluoride is inhibited by metal ions like Ca, Mg, Al. Fe, as far as I know, doesn't inhibit Fluoride absorption. Out of the choices given, rule out A and B. Between C and D, NaF is one of the preferred methods of fluoride delivery. I would select C.

 

[dentistus]

this has the pentagonal shape

hi
can u explain plz

because i thk y shaped groove pattern ( 3 cusps) in mand. 2nd p.m
so shape shd be pentagonal

Thanks

 

[dentistus]

a.articular disk
this is supplied by the auriculotemporal nerve
correct me if i am wrong

Plz explain

i thk articular capsule is rich in blood supply & nerve supply both

so ans shd be articular capsule

thanks

 

[dentistus]

there r 4 stages of deglutition and first 2 are voluntary and next 2 are involuntary so i think it shd be a. voluntary

plz explain & correct me

swallowing is divided into 3 phases

1. buccal phase occurs voluntarily in the mouth

2.The pharyngeal phase occurs involuntarily when food enters the pharynx

3.The esophageal phase occurs involuntarily in the esophagus.

The medulla oblongata controls autonomic functions

• respiration (via dorsal respiratory group and ventral respiratory group)
• blood pressure
• swallowing
• vomiting
• defecation
• urination
• reflexes

Thanks

 

[mfisl]

just a few more to add:

1. enamel is thickest where?
a. CEJ
b. DEJ
c. under mesio buccal cusp
d. under disto buccal cusp


2. compact bone has all of the following EXCEPT

a. trabaculae
b. osteon
c. lamellae

3. which will not be found in epiphyseal cartilage
a. fibrocartilage
b.primary cartilage
c.secondary bone
d.woven bone

 

[pb2007]

compact bone has all of the following EXCEPT

a. trabaculae..ans
b. osteon
c. lamellae
which will not be found in epiphyseal cartilage
a. fibrocartilage..ans
b.primary cartilage
c.secondary bone
d.woven bone

 

[mfisl]

thanks PB!
R U sure about these?
A few more
which vein does lymph from face enter?( sorry no options)

Infection of mandibular molar enters which space?

Articular disc is vascular where?
is it bilaminar zone????

- Crevicular fluid has which immunoglobulin?
igG OR igA?

 

[pb2007]

thanks PB!
R U sure about these?
A few more
which vein does lymph from face enter?( sorry no options)

Infection of mandibular molar enters which space?

Articular disc is vascular where?
is it bilaminar zone????

- Crevicular fluid has which immunoglobulin?
igG OR igA?

sorry i'm not vry sure abt th answers above,let sumone else too cum up wit th answers then we'l kno if they r rite or not
-articular disc is attached posteriorly to a region of loose connective tissue that is highly vascularized and innervated .this is known as th retrodiscal tissue or posterior attachment ,th other name for retrodiscal tissue is bilaminar zone or posterior atachment.
-i think crevicular fluid has iga since it is part of normal secretory immunoglobulin.

 

[uabsfm]

thanx to all for answering the qs

 

[uabsfm]

thanks PB!
R U sure about these?
A few more
which vein does lymph from face enter?( sorry no options)

lymph from the right side of the face enters at the junction of right internal jugular and subclavian vein while from left side of the face enters the same structure on the left side.
Infection of mandibular molar enters which space?

infection from amndibular molars will enter into submandibular space
Articular disc is vascular where?
is it bilaminar zone????

yes its called bilaminar sone
- Crevicular fluid has which immunoglobulin?- its IgG
igG OR igA?

correct me if wrong

 

[uabsfm]

just a few more to add:

1. enamel is thickest where?
a. CEJ
b. DEJ
c. under mesio buccal cusp
d. under disto buccal cusp


2. compact bone has all of the following EXCEPT

a. trabaculae
b. osteon
c. lamellae

3. which will not be found in epiphyseal cartilage
a. fibrocartilage
b.primary cartilage
c.secondary bone
d.woven bone

correct me if wrong

 

[vibhakar]

how does condyle recive blood supply even after complete fracture at pterygoid fovea/neck?

 

[topaiz]

just a few more to add:

1. enamel is thickest where?
a. CEJ
b. DEJ
c. under mesio buccal cusp
d. under disto buccal cusp


2. compact bone has all of the following EXCEPT

a. trabaculae
b. osteon
c. lamellae

3. which will not be found in epiphyseal cartilage
a. fibrocartilage
b.primary cartilage
c.secondary bone
d.woven bone

enamel is thickest where:-
it is thickest at DEJ underlying the cusp or cingulum so i think DEJ choice is most appropriate.

 

[topaiz]

how does condyle recive blood supply even after complete fracture at pterygoid fovea/neck?

According to Okeson the feeder vessels supply the condyle after its supply is cut after fracture.

 

[topaiz]

thanks PB!
R U sure about these?
A few more
which vein does lymph from face enter?( sorry no options)

Infection of mandibular molar enters which space?

Articular disc is vascular where?
is it bilaminar zone????

- Crevicular fluid has which immunoglobulin?
igG OR igA?

Infection of mandibular molar enters which space-submandibular space

Articular disc is most vascular at bilaminar zone.


crevicular fluid or sulcular fluid has IgG immunoglobulin
saliva has IgA

 

[xactreality]

Can someone pls explain this to me, its from dental deck 06-07

in working side movement, the MB cusp of max first molar passes through the lingual cusp of mandibular first

in working side movement. the MB cusp of max 2nd molar passes through the facial groove of mand 2nd

how come its facial? I just dont get these movements!

thanks

 

[vibhakar]

the continous flow of blood in arteries during diastole is made possible by?
energy stored in arteries during diastole
wat does it mean?plz explain

 

[vibhakar]

under normal conditions, the resting potential across a muscle cell membrane is lower than
the equilibrum potential for pottasium because
1)sodium permeability is equal to pottasium permeability
2)sodium permeability exceeds pottasium permeabiity
3)memb. has low permeability to sodium ions
4)memb. has low permeability to chloride ions

 

[vibhakar]

the discharge of impulse in small motor neurons innervating muscle spindle serves to?
sustain extrafusal muscle contraction
plz explain

 

[topaiz]

INCISAL AND OCCLUSAL is same thing dear.
depends if you are talking about anterior or posterior teeth

for this question you may see the dental deck of dental anatomy card heading T-Terms(2006-2007)deck
question has embrasure as answer
at the back of card in the NOTES its given:
The largest incisal/occlusal embrasure is found between max canine and first premolar.
Take care.
happy studing🙂

 

[topaiz]

1) Which of the following hormones causes the dilation of kidney arteries :
a)Histamine
b)vasopressin
c)epinephrine.
etc

2)What stop mouth from overopening?

3)If the cocentration of the OAAdecreases then what happens?
a)cori cycle
b)TCA cycle
c)glycolysis is there
d)ketone bodies increases.

4)Collegen brerakdown which all enz are involved?

5)Cell death in aganulocytosisis due to what?
a)agammaglobilemia
b)neutropenia
c)bacterimia

5)fused roots usually seen in which tooth?
a)Mand canine
b)mand LI
c)max LI
d)max canine

6)in gout the Great toe is due to?
a)RA(rheumatoid artheritis)
b)myalgia
c)osteoartheritis

7)Osteoclast resemble what?
a)cementoclast
b)odontoclast
c)macrophase
d)osteocyte
e)odontoblast.

8)Pencil shaped clots are seen in whic pathology?

9)Biological effect of Gh factor from liver?

10)Which of the following characterizes effective immune response to mycobacteria?
Accumulation of TNF in the blood stream
Accumulation of TNF in granuloma
Circulating antibodies against mycobacterial antigen
Antibodies against mycobacterial toxin

11)One pt with diabetes mellitus type 1 , after doing exercises for
several months require less dosage of insulin what will be the cause?

 

[topaiz]

under normal conditions, the resting potential across a muscle cell membrane is lower than
the equilibrum potential for pottasium because
1)sodium permeability is equal to pottasium permeability
2)sodium permeability exceeds potassium permeabiity
3)memb. has low permeability to sodium ions
4)memb. has low permeability to chloride ions

i think it can be 2)sodium permeability exceeds potassium permeabiity

 

[topaiz]

Can someone pls explain this to me, its from dental deck 06-07

in working side movement, the MB cusp of max first molar passes through the lingual cusp of mandibular first

in working side movement. the MB cusp of max 2nd molar passes through the facial groove of mand 2nd

how come its facial? I just dont get these movements!

thanks

i think in this question u have written MB cusp of max ist molar it shd be ML cusp

 

[Doorknob]

TOPIAZ...YOU ARE CONTRADICTING YOURSELF .

PEOPLE ON SDN...PLEASE DO NOT TAKE WILD GUESSES on the questions in order to be the 1st to answer or to have the most posts do your research and studdying and then answer please.

for this question you may see the dental deck of dental anatomy card heading T-Terms(2006-2007)deck
question has embrasure as answer
at the back of card in the NOTES its given:
The largest incisal/occlusal embrasure is found between max canine and first premolar.
Take care.
happy studing🙂

its between max canine and 1st Pm

 

[xactreality]

i think in this question u have written MB cusp of max ist molar it shd be ML cusp

I wrote exactly whats in the decks, thats why am confused!

 

[topaiz]

TOPIAZ...YOU ARE CONTRADICTING YOURSELF .

PEOPLE ON SDN...PLEASE DO NOT TAKE WILD GUESSES on the questions in order to be the 1st to answer or to have the most posts do your research and studdying and then answer please.

I am not gussening this answer its what exactly written in decks and i am trying to correct the worng answer given by fellow frd.
answer to this is The largest incisal/occlusal embrasure is found between max canine and first premolar.
We are here to discuss the problems not to judge anyone🙁

 

[uabsfm]

What is endogenous cholesterol? Most endogenous cholesterol is converted to?
a)Glucose
b)Cholic acid
c)Steroid
d)Oxaloacetete
e)Ketone bodies

 

[uabsfm]

the distolingual cusp of the right mand 1st molar is fractured by excessive contact with the opposing maxillary molar during right lateral movment . which is the most interference?

a. lingual surface of a maxillary lingual cusp
b. facial surface of a maxillary lingual cusp
c. lingual surface of maxillary facial cusp

on the crown of mandibular canine , the general labial convexity is normally not so great as that of which of the following teeth?
a.max canine
b.max premolars
c.mand premolars

pls answer these qs

 

[uabsfm]

if V nerve is cut below medulla wat happens

a loss of sensation of pain same side
b loss of sensation of pain ipsilateral
c loss of propriocepion same side
d loss of sensation of propriception opposite side

 

[uabsfm]

clostridia perfringens is

sacharolytic
proteolytic
nucleolytic

 

[ONS]

aspiring dentis, I think the nerve that would be anesthetised in the pterygopaltine fossa is V2

I am confused about something, can someone pls tell me which muscles exactly prevent food from enrtring the nasopharynx?

thanks

The nerve which will be anaesthetised will be V2. The maxillary nerve starts from the trigeminal ganglion, travels through the cavernous sinus exiting the skull at the foramen rotundum to enter the pterygopalatine fossa where it gives off several branches to the mid face. Now when maxillary nerve block is given.
A needle is inserted just below the zygomatic arch midway between the coronoid and condyle of the mandible. It is inserted perpendicular to the skin until the pterygoid plate is felt. The needle is then withdrawn and guided anteriorly towards the eye to enter the pterygopalatine fossa. And also if hemorrhage of the maxillary artery wll occur it may lead to hematoma in the hard and soft palate..

I hope this wll help u..

 

[uabsfm]

long filamentous form
a.bacilli
b.rods
c.cocci
d.spirochetes

 

[topaiz]

clostridia perfringens is

sacharolytic
proteolytic
nucleolytic

saccharolytic

 

[topaiz]

long filamentous form
a.bacilli
b.rods
c.cocci
d.spirochetes

Actinomycetes are long form of filamentous bacteria belong to bacillus group

 

[topaiz]

if V nerve is cut below medulla wat happens

a loss of sensation of pain same side
b loss of sensation of pain ipsilateral
c loss of propriocepion same side
d loss of sensation of propriception opposite side

correct me if i am wrong

 

[topaiz]

What is ? Most endogenous cholesterol is converted to?
a)Glucose
b)Cholic acid
c)Steroid
d)Oxaloacetete
e)Ketone bodies

endogenous cholesterol is cholestrol the body makes in liver.
This get convereted in cholestrol esters,bile &salts and use to make steroids over here i think most appropriate answer is steroid.

 

[topaiz]

the distolingual cusp of the right mand 1st molar is fractured by excessive contact with the opposing maxillary molar during right lateral movment . which is the most interference?

a. lingual surface of a maxillary lingual cusp
b. facial surface of a maxillary lingual cusp
c. lingual surface of maxillary facial cusp

on the crown of mandibular canine , the general labial convexity is normally not so great as that of which of the following teeth?
a.max canine
b.max premolars
c.mand premolars

pls answer these qs

a. lingual surface of a maxillary lingual cusp
a.max canine