Let's try again, join me for study group NBDE I may/June 2010

[blissonearth]

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Hi friends, let's continue the closed thread here. No promoting any materials here, just prop some in doubt questions as our exam is approaching fast.

 

[Lord Voldemort]

which is a typical finding in a normal 23 yr old male?

-hematocrit 45%
-venous blood ph of 7.2
-wbc count of 10000/mm3
-rbc count of 7000000/mm3
-pulse pressure equal to 80mm hg

 

[Lord Voldemort]

if ph becomes lower than the isoelectic point of a protein, then how wil the protein respond in an electrophoretic system?it wil

-become denatured
-migrate to negative pole
-migrate to positive pole
-remain stationary nd unchanged
-separate into monomeric forms?

 

[rose82]

Guys, I am studying dental anatomy now. I read that if you just read chapter 1, 4, 6 okeson you will do fine. Of course with the decks... is that true ? OR should I read chapter 1-4 in okeson ?

im guessing chapt 6 is important along with first few.

for occlusion,we really learn by doing the question papers again and again...i dont mean remembering the answers...but i felt reading the explanations for q's taught me more than kaplan.

 

[elmos]

thks toothseeker for the correction but can i know which premolar is the most tilt lingually/

 

[dontist]

hi dontist , even me got confused after your 2nd question, but got the ans http://anukp.wordpress.com/2007/01/25/development-of-mandible/ read this

papu the article shows that meckel cartilage is of mandible .. that forms incus and maleus... ...

while the mandible itlesf forms by intramembranous ossification...

am i correct...??

just to confirm!!!👍👍👍👍

meckel's cartilage is a remnant while the mandible is being formed.
mandible forms by intramembranous ossification.

thanks sunshine....


ok guys here is another question.. relatively simple but confused with 1 and 3.

can anyone tell me y option 1 is not correct??

i think overactive makes it enlarged isnt it??

 

[papu]

papu the article shows that meckel cartilage is of mandible .. that forms incus and maleus... ...

while the mandible itlesf forms by intramembranous ossification...

am i correct...??

just to confirm!!!👍👍👍👍


thanks sunshine....


ok guys here is another question.. relatively simple but confused with 1 and 3.

can anyone tell me y option 1 is not correct??

i think overactive makes it enlarged isnt it??

yap, u r correct intramembranous ossification is right.

hey, i think 3rd option is right
buz thyroid gland enlargement occurs in both hypo and hyper activity

 

[godisgud]

The longest cusp in the mouth is present on the
max canine
mand canine

 

[dontist]

yap, u r correct intramembranous ossification is right.

hey, i think 3rd option is right
buz thyroid gland enlargement occurs in both hypo and hyper activity

hypothyroidism causes enlarged thyroid?? i doubt....


here is another confusing question...

all muscles of larynx is innervated my recurrent laryngeal nerve branch of _________??

except crycothyroid.. which is innervated by external branch of superior laryngeal nerve..

am i correct???

how can this answer be inferior laryngeal nerve???

pl fill in the blanks.. too lazy to go to books again...😀😀😀

 

[papu]

The longest cusp in the mouth is present on the
max canine
mand canine

i think mandibular canine, but not sure

 

[papu]

@ dontist
yes i am sure hypothyroidism causes goiter (its called as nontoxic goiter)

 

[viplilia]

hypothyroidism causes enlarged thyroid?? i doubt....


here is another confusing question...

all muscles of larynx is innervated my recurrent laryngeal nerve branch of _________??

except crycothyroid.. which is innervated by external branch of superior laryngeal nerve..

am i correct???

how can this answer be inferior laryngeal nerve???

pl fill in the blanks.. too lazy to go to books again...😀😀😀

it is a branch of the inferior laryng nerve which is branch of vagus. 🙄

 

[dontist]

@ dontist
yes i am sure hypothyroidism causes goiter (its called as nontoxic goiter)

oh ya.. so dumb of me.. sorry so dumb of me...😀😀

thanks dude.....

it is a branch of the inferior laryng nerve which is branch of vagus. 🙄

u mean recurrent laryngeal is branch of inferior laryngeal nerve?? which in turn is branch of vagus??😕😕😕😕

 

[dontist]

priimary cementum posses...

lamella
lacunae
cementocytes
canaliculi

i was thinking of lacunae or cementocytes but the answer is lamelle....

i doubt this .. i think lamelle is found in enamel.......... m i correct guys>??

 

[viplilia]

oh ya.. so dumb of me.. sorry so dumb of me...😀😀

thanks dude.....




u mean recurrent laryngeal is branch of inferior laryngeal nerve?? which in turn is branch of vagus??😕😕😕😕

yes, I guess so😎

 

[dontist]

isnt the question about brush border????


what can be possible answer?? i m thinking of ciliary border...but ans as given is striated border.. can anyone confirm which is correct?

 

[wadent]

i thought ciliary border too...
??
dontist from where is the source of these quest ???

 

[dontist]

i thought ciliary border too...
??
dontist from where is the source of these quest ???

from our most reliable source....😀😀😀

which has lots of flaws...

btw the answer is striated border....


can anyone else confirm it??? i dont know i think the answer is wrong in this i guess......!!!

 

[dontist]

priimary cementum posses...

lamella
lacunae
cementocytes
canaliculi

i was thinking of lacunae or cementocytes but the answer is lamelle....

i doubt this .. i think lamelle is found in enamel.......... m i correct guys>??

can anyone answer my this question?? 😴😴😴😴

 

[dontist]

if ph becomes lower than the isoelectic point of a protein, then how wil the protein respond in an electrophoretic system?it wil

-become denatured
-migrate to negative pole
-migrate to positive pole
-remain stationary nd unchanged
-separate into monomeric forms?

i think this is the answer...

do u know the correct ans????

 

[ddss87]

isnt the question about brush border????


what can be possible answer?? i m thinking of ciliary border...but ans as given is striated border.. can anyone confirm which is correct?

Epithelial cells in the small intestine are a type of brush border cell that are joined together by tight junctions to form a polymer impermeable membrane. These cells have a brush border surface to increase their absorptive surface area, thus making them more efficient.

A brush border (or striated border) is the name for the microvilli-covered surface of simple cuboidal epithelium and simple columnar epithelium cells found in certain locations of the body.
Brush border cells are found in two main locations:
The small intestine tract
The kidney

Hope this helps.

 

[ddss87]

i think this is the answer...

do u know the correct ans????

here's the explanation for this:
a protein carries a net negative charge when pH is low (acidic conditions). So, it will move to the positive pole.
If the pH is high (alkaline conditions), it will carry a net positive charge and move to the negative pole.

 

[dontist]

here's the explanation for this:
a protein carries a net negative charge when pH is low (acidic conditions). So, it will move to the positive pole.
If the pH is high (alkaline conditions), it will carry a net positive charge and move to the negative pole.

thanks good explanation...

Epithelial cells in the small intestine are a type of brush border cell that are joined together by tight junctions to form a polymer impermeable membrane. These cells have a brush border surface to increase their absorptive surface area, thus making them more efficient.

A brush border (or striated border) is the name for the microvilli-covered surface of simple cuboidal epithelium and simple columnar epithelium cells found in certain locations of the body.
Brush border cells are found in two main locations:
The small intestine tract
The kidney

Hope this helps.

i can see that brush border is same as striated border.. but going back to our question.. there is option of ciliated border.. dont u think it can be optioN>>

and do kidneys too have brush border??????😕😕

 

[dontist]

can anyone tell me why smooth muscles have no striation??


skeletal muscles are multinucleated.
cardiac has one to two nucleus.
smooth muscles are single nucleated and is spindle shaped cell.

i think all the muscle cells have centrally placed nucleus right??


please correct me if i m wrong.
and what are the shapes of cardiac and skeletal muscle cells?

 

[papu]

guys help me with this 2001 asda paper question

each of the following factors affects heights of cusps and depth of fossae on restorations except one. which is the exception?
a. curve of spee
b. intercondylar distance
c. vertical overlap of anterior teeth
d. horizontal overlap of anterior teeth
e. steepness of articular eminence

 

[cooldental]

can anyone answer my this question?? 😴😴😴😴

hi dontist

primary cementum consist of lamellae. pri cementum is nothing but acelluar cementum covering occlusal 2/3rd of root consists of calcified intracelluar substance ,sharpeys fibres and cemtoblast lines it.( lamellae means a thin layer of tissue on the surface in this case its cementum is arranged in appositional pattern.)

lacunae is present secondary cementum and cellular cementum cuz they are similar to bone, but cemmentum doesnt have haversian system.

the lamellae which ur talking abt enamel is E.L which is less of mineral content from surface enamel to dentin. seen in areas of tension between enamel prism.

correct me if i am wrong

 

[dontist]

hi dontist

primary cementum consist of lamellae. pri cementum is nothing but acelluar cementum covering occlusal 2/3rd of root consists of calcified intracelluar substance ,sharpeys fibres and cemtoblast lines it.( lamellae means a thin layer of tissue on the surface in this case its cementum is arranged in appositional pattern.)

lacunae is present secondary cementum and cellular cementum cuz they are similar to bone, but cemmentum doesnt have haversian system.

the lamellae which ur talking abt enamel is E.L which is less of mineral content from surface enamel to dentin. seen in areas of tension between enamel prism.

correct me if i am wrong

wow.. i was just in the opposite direction of thinking.. thanks a lot buddy for correcting me... u r correct.. actually it went completely out of my mind about those things which you told...

keep it up...

 

[dr.internationa]

guys,
which is the location of the smallest cusp of mand 1st molar?

is it distolingually or distobuccally?

i thought the answer was distobuccally since the smallest cusp is the distal cusp. but the key given says distolingually.

Anyone?😕

 

[dontist]

even i think it should be distobuccal.....sometimes the answers are confusing..a:🙁(

 

[cooldental]

guys,
which is the location of the smallest cusp of mand 1st molar?

is it distolingually or distobuccally?

i thought the answer was distobuccally since the smallest cusp is the distal cusp. but the key given says distolingually.

Anyone?😕

hi dnt go with book answers many are wrong in the book. just think the position of distal cusp. distal to distobuccal cusp u see distobucal grove and distal to it u see distal cusp so it shud be DB not DL.

correct me if iam wrong

 

[dr.internationa]

thanks dontist and cooldental..
yes i think the answer given maybe wrong. my doubt was coz this question was discussed in other threads and everyone agreed on 'distolingually'

 

[dontist]

thanks dontist and cooldental..
yes i think the answer given maybe wrong. my doubt was coz this question was discussed in other threads and everyone agreed on 'distolingually'

i dont know i am not able to find the thread.. it will be great if u can paste or quote from there...

how and y they agreed to be distolingually...

can u please do tht?? we all can still think on it.

 

[godblessus]

guys help me with this 2001 asda paper question

each of the following factors affects heights of cusps and depth of fossae on restorations except one. which is the exception?
a. curve of spee
b. intercondylar distance ans
c. vertical overlap of anterior teeth
d. horizontal overlap of anterior teeth
e. steepness of articular eminence

This is in okeson chapter 6

Intercondylar distance affect marginal ridge and gooves direction.

hope this helps!!

 

[dr.internationa]

hi dontist..i checked again..sorry it was my mistake ...actually pbkal and iomega had this discussion in another thread and when i typed the word 'distolingually' in the search box to find out if anyone has answered this ques..the words came in red and i thought that was the answer they agreed on!

my mistake..sorry guys...this exam is making me crazy!!!🙄

 

[dontist]

hi dontist..i checked again..sorry it was my mistake ...actually pbkal and iomega had this discussion in another thread and when i typed the word 'distolingually' in the search box to find out if anyone has answered this ques..the words came in red and i thought that was the answer they agreed on!

my mistake..sorry guys...this exam is making me crazy!!!🙄

lol so final answer is distobuccal right????

 

[dontist]

THE PORTION IN THIS THEY ARE REFERRING TO PREMAXILLA...

AND PREMAXILLA DEVELOPES FROM FRONTO NASAL PROCESS RIGHT??
BUT THERE IS NO SUCH OPTION

CAN ANYONE EXPLAIN WHAT CAN BE THE ANSWER???

 

[wadent]

i think the answer is (3)-med.nasal process !!
what does the key says ???? + from where ur gettin those quest. dude ??????????

 

[aathmashree]

can any 1 tell me wat all chapters v r suppose 2 study from okeson,i mean impotant ones 4 nbde1

 

[cooldental]

THE PORTION IN THIS THEY ARE REFERRING TO PREMAXILLA...

AND PREMAXILLA DEVELOPES FROM FRONTO NASAL PROCESS RIGHT??
BUT THERE IS NO SUCH OPTION

CAN ANYONE EXPLAIN WHAT CAN BE THE ANSWER???

Hey the answer for this is palatal proceses of maxillary processes.
median nasal processe form the middle of upper lip, philtrum region and also middle portion of the nose from the root of apex.

lateral nasal process will form alea of nose, sides of nose.

posterior one third of maxilla is formed by horizontal plate of palatine bone.
is it clear now.

thanks

 

[dontist]

i think the answer is (3)-med.nasal process !!
what does the key says ???? + from where ur gettin those quest. dude ??????????

u r correct.. the answer is MEDIAL NASAL process. BUT CAN U TELL ME WHY NOT FRONTONASAL PROCESS??

HUMAN EMBRYOLOGY BY INDERBIR SINGH TELLS THAT PREMAXILLA DEVELOPES FROM FRONTONASAL PROCESSS WHICH IS NOT EVEN THERE IN OPTIONS.

and question is from our most (irr)reliable source...😀😀

hope u understand it.. lolz...

Hey the answer for this is palatal proceses of maxillary processes.
median nasal processe form the middle of upper lip, philtrum region and also middle portion of the nose from the root of apex.

lateral nasal process will form alea of nose, sides of nose.

posterior one third of maxilla is formed by horizontal plate of palatine bone.
is it clear now.

thanks

as i said above.... the answer is medial nasal process...

but as far as i have referred in Inderbir sing Embryo text book.. it says that its formed form frontonasal process....



CAN BOTH OF U GUYS EXPLAN.. HOWS THIS MEDIAL NASAL PROCESS????

I AM HAVING THIS CONFUSION... WHICH PROCESS FORMS WHICH THING..

IF U CAN SUM UP WHOLE THING AND CAN TELL ME IN A SIMPLE WAY...

THAT WILL MAKE OVER GREAT....

THANKS FOR THE HELP BTW...👍👍👍👍

 

[dontist]

ONE MORE QUESTION.....

WHAT EXACTLY IS TERMINAL WEB??? WHERE IS IT FOUND AND WHATS ITS FUNCTION??

CAN SOMEONE TELL ME THE ANSWER??????🙂)))

 

[aathmashree]

how many major cusps r there in maxilary molars and in mandibular molar,

ans given as 4 and 5,but in kaplan given as 3 and 4...........
wats the correct ans........

 

[dontist]

AFAIK its 3 and 4.

 

[cooldental]

u r correct.. the answer is MEDIAL NASAL process. BUT CAN U TELL ME WHY NOT FRONTONASAL PROCESS??

HUMAN EMBRYOLOGY BY INDERBIR SINGH TELLS THAT PREMAXILLA DEVELOPES FROM FRONTONASAL PROCESSS WHICH IS NOT EVEN THERE IN OPTIONS.

and question is from our most (irr)reliable source...😀😀

hope u understand it.. lolz...



as i said above.... the answer is medial nasal process...

but as far as i have referred in Inderbir sing Embryo text book.. it says that its formed form frontonasal process....



CAN BOTH OF U GUYS EXPLAN.. HOWS THIS MEDIAL NASAL PROCESS????

I AM HAVING THIS CONFUSION... WHICH PROCESS FORMS WHICH THING..

IF U CAN SUM UP WHOLE THING AND CAN TELL ME IN A SIMPLE WAY...

THAT WILL MAKE OVER GREAT....

THANKS FOR THE HELP BTW...👍👍👍👍

dude i nvr said median nasal processes. read what i have written.

 

[dontist]

dude i nvr said median nasal processes. read what i have written.

oops my mistake ... i m sorry i have read the explanation given by u..

but the answer given in the key is medial nasal process...😕😕😕😕

 

[cooldental]

oops my mistake ... i m sorry i have read the explanation given by u..

but the answer given in the key is medial nasal process...😕😕😕😕

which paper is that i mean which year? may be the key is wrong dude.

 

[dontist]

Q: which of the following has no lymph sinuses and is surrounded partly by connective tiseeu and partly by epithelium, latter forming deep imfolding?

1. thymus
2. peyer's patches
3. lingual tonsils.
4. palatine tonsil
5. pharyngeal tonsils??


deep infoldings are crypts right?? as far as wiki goes it shows that pharyngeal tonsils have no crypts and lined my ciliated epithelium.

am i thinking in correct direction?

the answer is pharyngeal tonsil but i dont know how.. i mean is it correct????

 

[happyk9]

Q: which of the following has no lymph sinuses and is surrounded partly by connective tiseeu and partly by epithelium, latter forming deep imfolding?

1. thymus
2. peyer's patches
3. lingual tonsils.
4. palatine tonsil
5. pharyngeal tonsils??


deep infoldings are crypts right?? as far as wiki goes it shows that pharyngeal tonsils have no crypts and lined my ciliated epithelium.

am i thinking in correct direction?



the answer is pharyngeal tonsil but i dont know how.. i mean is it correct????

Here is what I found from the book "Color Atlas of Cytology, Histology, and Microscopic Anatomy":

"In contrast to the palatine and lingual tonsils, the pharyngeal tonsil has a multilayered ciliated epithelium. Islands of multilayered squamous epithelium may interrupt it. This nonciliated epithelium may contain lymphocytes as well. The mucous membrane forms sagittal folds, i.e. the surface is enlarged not by invaginations and tonsillar pits, but by the formation of microfolds."

So microfolds are not crypts, but similar to crypts.

 

[dontist]

which paper is that i mean which year? may be the key is wrong dude.

asda papers I F series...

 

[dontist]

Here is what I found from the book "Color Atlas of Cytology, Histology, and Microscopic Anatomy":

"In contrast to the palatine and lingual tonsils, the pharyngeal tonsil has a multilayered ciliated epithelium. Islands of multilayered squamous epithelium may interrupt it. This nonciliated epithelium may contain lymphocytes as well. The mucous membrane forms sagittal folds, i.e. the surface is enlarged not by invaginations and tonsillar pits, but by the formation of microfolds."

So microfolds are not crypts, but similar to crypts.

👍👍 good one bro.. really good explanation...

 

[happyk9]

asda papers I F series...

I think the answer should be median nasal process:

The palate develop in the 5th week. Three steps: 1. Primary palate formation; 2. Secondary palate; 3. Fusion of primary and secondary.

Primary palate comes from the fusion of two median nasal process (grow medially and downwardly). Primary palate forms the bone enclose the maxillary incisors including the small portion of hard palate just behind the incisor and maxillary bone below the nose.