Answers needed for NBDE Part 1 questions

[smartdude350]

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Hello Everyone
Please answers them with explanation

1.Which is derived from neural crest?

A.Parasym Preganglionic cell bodies
b.Sym Preganglionic cell bodies
c.Sym Postganglionic cell bodies

2. Uric acid is produced where?
3.What does myofibroblast do?
A.Wound contraction
B.Precursor to skeletal muscle,
c.Precursor to smooth muscle

4.Atopic allergic individual differs from non-allergic person in that allergic individual
A. has more masl cell,
B. has more histamine in mast cells,
c.has more IgE on mast cells

5. What is the function of synovila fluid?
A.Provide lubrication and nutrient to some joint tissues,
B.Provide lubrication to all joints tissues

6.Gastrin stimulate acid secretion by what?
Secreting CT into blood,
HCO3 into blood

7. Intensity of sound depends on what?

8. Use of broad spectrum antibiotics will have what effect?
A.Increase toxicity to host,
B.fungal growth

9.What resides in salivary glands (and other structures) and remains latent if the person is healthy?

10 Which is not true of chlamydia trachomatis?
A. Most common STD in U.S
B.Symptomatic in females
CASymptomatic in males

11.Which is not carcinogenic?

A.Nitrosamines
B.Polyhydrocarbon

12.Chronic passive congestion is a result of what?
A.Fibrosis of alveolar wall,
B.Thinning of alveolar wall
C.Granuloma

13.Carcinoma in situ means what?

14.Inorganic crystals in enamel rods parallel what?

15.What determines the direction of grooves and ridges?

16What is the smallest cusp in mandibular primary 2nd molar?

17.In the longitudinal section of mandibular canine, where is the pulp cavity thickest?

18Which teeth has lingual cervical line more apical than facial cervical line?

19. Jaw -jerk Reflex goes through what ganglion?

20. IgG is activated Where?
A.Myoepith
B.Straited

21. Superior part of carotid triangle

22. Sickle cell Amenia - Oxygen carrying capacity?

A. 33%
B. 61%
C. 75%
D 78%

23. cAMO Causes
A.Promotion of phosphorylation of glycogen phosphorylast
B.Is a direct dubstrate of glycogen phosphorylase

24.Pancreatice lipase are activated by

A. Acid,
BTrypsin,
c. Enterokinase
D.Bile salts

25 More Common in enamel

A.Hyaluronate
B.Osteonectin

26
The Defination of BMR:
A. Increase of H2O
B. Related to surface area

28.How to make a cDNA library?

29 The structure and nomenclature of the nucleotide bases e.g. the nomeclature of ATP when its broken down. Is it Adenine, adenosine, etc..


30.High inensity disinfectant?
A. Kill HepB
B.TB
C. All spores

31 Heart has a decrese end systolic amt

A. Ionotropic
B.Chronotropic

32 . How do you differentiate between the two permanent mandibular central incisors?

Ps. Answer with explanation
Thanks

 

[anniestar]

smartdude350[/COLOR];9485594]Hello Everyone
Please answers them with explanation

1.Which is derived from neural crest?

A.Parasym Preganglionic cell bodies
b.Sym Preganglionic cell bodies
c.Sym Postganglionic cell bodies

2. Uric acid is produced where? KIDNEY NOT SURE,IT SHUD BE WHERE PURINE METABOLISM TAKES PLACE
3.What does myofibroblast do?
A.Wound contraction
B.Precursor to skeletal muscle,
c.Precursor to smooth muscle

4.Atopic allergic individual differs from non-allergic person in that allergic individual
A. has more masl cell,
B. has more histamine in mast cells,
c.has more IgE on mast cells

5. What is the function of synovila fluid?
A.Provide lubrication and nutrient to some joint tissues,
B.Provide lubrication to all joints tissues

6.Gastrin stimulate acid secretion by what?
Secreting CT into blood,
HCO3 into blood

7. Intensity of sound depends on what? AMPLITUDE

8. Use of broad spectrum antibiotics will have what effect?
A.Increase toxicity to host,
B.fungal growth

9.What resides in salivary glands (and other structures) and remains latent if the person is healthy? CMV

10 Which is not true of chlamydia trachomatis?
A. Most common STD in U.S
B.Symptomatic in females
CASymptomatic in males

11.Which is not carcinogenic?

A.Nitrosamines
B.Polyhydrocarbon

12.Chronic passive congestion is a result of what?
A.Fibrosis of alveolar wall,
B.Thinning of alveolar wall
C.Granuloma

13.Carcinoma in situ means what? BASEMENT MEMBRANE IS INTACT

14.Inorganic crystals in enamel rods parallel what? BODY OF RODS BUT DIVERGE IN CERVICAL REGIONS

15.What determines the direction of grooves and ridges?

16What is the smallest cusp in mandibular primary 2nd molar? DISTAL

17.In the longitudinal section of mandibular canine, where is the pulp cavity thickest?

18Which teeth has lingual cervical line more apical than facial cervical line?

19. Jaw -jerk Reflex goes through what ganglion?TRIGEMINAL

20. IgG is activated Where?
A.Myoepith
B.Straited

21. Superior part of carotid triangle

22. Sickle cell Amenia - Oxygen carrying capacity?

A. 33%
B. 61%
C. 75%
D 78%

23. cAMO Causes
A.Promotion of phosphorylation of glycogen phosphorylast
B.Is a direct dubstrate of glycogen phosphorylase

24.Pancreatice lipase are activated by

A. Acid,
BTrypsin,
c. Enterokinase
D.Bile salts

25 More Common in enamel

A.Hyaluronate
B.Osteonectin

26
The Defination of BMR:
A. Increase of H2O
B. Related to surface area

28.How to make a cDNA library?

29 The structure and nomenclature of the nucleotide bases e.g. the nomeclature of ATP when its broken down. Is it Adenine, adenosine, etc..


30.High inensity disinfectant?
A. Kill HepB
B.TB
C. All spores

31 Heart has a decrese end systolic amt

A. Ionotropic
B.Chronotropic

32 . How do you differentiate between the two permanent mandibular central incisors?

Ps. Answer with explanation
Thanks

I AM NOT TOO SURE.JUST TRIED.SOMEBODY PLS CORRECT🙄

 

[Truth seeker]

12.Chronic passive congestion is a result of what?
A.Fibrosis of alveolar wall, Answer
B.Thinning of alveolar wall
C.Granuloma

 

[wadent]

hey annistar

1.Which is derived from neural crest?

A.Parasym Preganglionic cell bodies
b.Sym Preganglionic cell bodies
c.Sym Postganglionic cell bodies

can u pls explain why u chose c as the answer not (b) !!! lookin to hear from u !
thanks

 

[anniestar]

hey annistar

1.Which is derived from neural crest?

A.Parasym Preganglionic cell bodies
b.Sym Preganglionic cell bodies
c.Sym Postganglionic cell bodies

can u pls explain why u chose c as the answer not (b) !!! lookin to hear from u !
thanks

hey,
this is how i figured out.maybe i am wrong.
my reasoning is that preganglionic cell bodies lie in CNS and postganglionic lie outside CNS in an autonomic ganglia.the neural crest cells give rise to autonomic ganglia whereas cells of CNS are derived from neural tube.
thats my opinion somebody can confirm pls.

 

[wadent]

hey anniestar..
thanks for replyin ,,,,,, would love to have another opinion,,can sombody plssssssssss confirm???

 

[terminal]

hey anniestar..
thanks for replyin ,,,,,, would love to have another opinion,,can sombody plssssssssss confirm???

Neural crest cells contribute to the formation of many adult
structures. Among these are all of the postganglionic neurons of the autonomic nervous system and
the sensory neurons of the peripheral nervous system.

Neural ectoderm forms the central nervous system, the somatic motor neurons of the
peripheral nervous system, and the preganglionic neurons of the autonomic nervous system.

 

[wadent]

hey terminal so ur sayin that it is PREGANGLIONIC (Thats the answer ! )

 

[terminal]

Neural crest cells contribute to the formation of many adult
structures. Among these are all of the postganglionic neurons of the autonomic nervous system and
the sensory neurons of the peripheral nervous system.

Neural ectoderm forms the central nervous system, the somatic motor neurons of the
peripheral nervous system, and the preganglionic neurons of the autonomic nervous system.

hope this clears

 

[wadent]

yup it is clear...
thanks terminal...

 

[wadent]

can u help with this pls !!

1)the intercostal nerves lie in the inercostal(space) of :
a.subcostal and the costal pleura.
b.internal and innermost intercoastal
c.ext. and int. intercoastal

2)the neurons of the central nerv.syst. that innervate muscles derived frm branchial arcs r found in which nuclei ?
a.nucleus ambigius
b.dorsal motor nucleus of vagus(X)
c.hypoglosal nucleus

3)which of the followin cranial nerves contain parasymp. component?
a.facial
b.abducuns
c.trigminal
d.spinal acsesory

4)which of the followin appear numerous and scatterd red spots
on the dorsal surface of the tongue?
a.lingual tonsil
b.filiform papila
c.foliat papila
d.fungi form
e.circumvalate papila

pls answer those !!!

 

[teethie]

my answers are :

can u help with this pls !!

1)the intercostal nerves lie in the inercostal(space) of :
a.subcostal and the costal pleura.
b.internal and innermost intercoastal
c.ext. and int. intercoastal

2)the neurons of the central nerv.syst. that innervate muscles derived frm branchial arcs r found in which nuclei ?
a.nucleus ambigius--------------ans
there are three nuclei of branchial arch: trigeminal nuclei, facial nuclei and nucleus ambigus

b.dorsal motor nucleus of vagus(X)
c.hypoglosal nucleus

3)which of the followin cranial nerves contain parasymp. component?
a.facial--------------ans
b.abducuns
c.trigminal
d.spinal acsesory

4)which of the followin appear numerous and scatterd red spots
on the dorsal surface of the tongue?
a.lingual tonsil
b.filiform papila
c.foliat papila
d.fungi form--answer(anyone can confirm too)
e.circumvalate papila

pls answer those !!!

 

[wadent]

thanks teethie !!
🙂
accordin to 1)quest. is the answer :........internal and innermost intercostal !!!

thanks and pls correct if wrong.

 

[teethie]

right, confirmed.

thanks teethie !!
🙂
accordin to 1)quest. is the answer :........internal and innermost intercostal !!!

thanks and pls correct if wrong.

 

[Truth seeker]

4)which of the followin appear numerous and scatterd red spots
on the dorsal surface of the tongue?
a.lingual tonsil
b.filiform papila - thats the most numerous
c.foliat papila
d.fungi form(answer)
e.circumvalate papila

 

[wadent]

thanks truth seeker,
ur right agree with u,,since papila filiforme are most numerous (but they dont conatin taste buds ) ..had doubt but just wana make sure !
thanks again..

lets solve smartdude350 questions !!!

 

[Truth seeker]

Yep wadent we'll try !

31 Heart has a decrese end systolic amt

A. Ionotropic (answer)
B.Chronotropic

 

[Truth seeker]

6.Gastrin stimulate acid secretion by what?
Secreting CT into blood,
HCO3 into blood

CT ??????

couldnt understand the q clearly
but gastrin (hormone) secretes gastric acid in 2 ways - directly through action on parietal cells and indirectly by stimulation of ECL to release histamine that binds on H2 receptors of parietal cells thus causing acid to release.

 

[teethie]

i am confused with two words numerous and red:
filliform papillae are numerous but non vascular therefore not red
fungiform are not numerous but vascular and appear red.

thanks truth seeker,
ur right agree with u,,since papila filiforme are most numerous (but they dont conatin taste buds ) ..had doubt but just wana make sure !
thanks again..

lets solve smartdude350 questions !!!

 

[teethie]

Q26😛OSTED BY smartdude350
The greater your Body Surface Area factor, the higher your BMR. Tall, thin people have higher BMRs

 

[Truth seeker]

i am confused with two words numerous and red:
filliform papillae are numerous but non vascular therefore not red
fungiform are not numerous but vascular and appear red.

Hey teethie , thanks for correcting me, , i dint read the q properly
its numerous and red (vascularized)- fungiform
most numerous and white (keratinized)-fillform

 

[smartdude350]

Hi Everyone,

Thanks for answering the questions....

Truth Seeker: The question 6.Gastrin stimulate acid secretion by what?

A) Secreting Cl(Chloride) into blood,
B) HCO3 into blood

Sorry for the printing error.

Will post some more soon.

6.Gastrin stimulate acid secretion by what?
Secreting CT into blood,
HCO3 into blood

CT ??????

couldnt understand the q clearly
but gastrin (hormone) secretes gastric acid in 2 ways - directly through action on parietal cells and indirectly by stimulation of ECL to release histamine that binds on H2 receptors of parietal cells thus causing acid to release.

 

[smartdude350]

Can U please explain this answer...

Thanks

Yep wadent we'll try !

31 Heart has a decrese end systolic amt

A. Ionotropic (answer)
B.Chronotropic

 

[wadent]

chronotropic---------> it influence heart beat.( increase heart rate)
inotropic..................> its for the force of muscle contarction..so its increase the contarction force leading to increase stroke volume ....

Cant understand this question !!!! as if there is somthin missin ??but anyway thats what i know about chrono/and inotropic...dont know what to say !!iam sure the question is not correct !! any idea !!!????

 

[doctorzeuss]

can you please be more specific on this question?
where are you getting this questions from if I may ask? great questions!
keep them coming!

22. Sickle cell Amenia - Oxygen carrying capacity?

A. 33%
B. 61%
C. 75%
D 78%

 

[Truth seeker]

Can U please explain this answer...

Thanks

Changes in ventricular inotropy (contractility) alter the rate of ventricular pressure development, thereby affecting ESV and SV. in other words decrease in ESV will increase SV and hence the inotropy.

hope this helps

 

[wadent]

Hey Guys i have a question its in decks 2009-2010 anatomy section question number 121...
can someone plssssssss exaplian me the difference between light meromysoin (LMM)
and heavy meromyosin (HMM) ??? iam not gettin it
acn any one pls explain me those two in a simple way !! thankss

 

[Doc17]

which of the following primary groove uniting inthe distal pit on the occlusal surface of mand. 2 molar represents the one that normally has no counterpart in the distal pit of the 1st molar?
a. Disto lingual
b. DF triangular
c. DL triangular
d. Distal marginal
e. Distal portion of the central.

basically i didnt get the question?Ans is B

can anyone explain me?

 

[Doc17]

i ll tell u wot i understand of it
as u knw Myosin thick fibre ,think of it as coma....now the head is heavy and tail is Light......i think it is a easy way for me keep in mind...

Hey Guys i have a question its in decks 2009-2010 anatomy section question number 121...
can someone plssssssss exaplian me the difference between light meromysoin (LMM)
and heavy meromyosin (HMM) ??? iam not gettin it
acn any one pls explain me those two in a simple way !! thankss

 

[anniestar]

Hey Guys i have a question its in decks 2009-2010 anatomy section question number 121...
can someone plssssssss exaplian me the difference between light meromysoin (LMM)
and heavy meromyosin (HMM) ??? iam not gettin it
acn any one pls explain me those two in a simple way !! thankss

light meromyosin forms the body of myosin means it is composed mainly of LMM
heavy MM binds with actin.
its gvn in decks.

 

[wadent]

ok !
ill do some search on wikii,,!
thanks aniestar and doc17..

 

[smartdude350]

Hi,

Please help with the following Questions...

1. Whats The mechanism of Liver Failure?
2. How do basophils look in a slide?
3. How do X-rays of hand give information about age?
4. Ricketts look like what in X-ray?
5. How are T cells programmed /positive/negative selection
6. Where are myoepithelial cells found and what func do they serve?
7. What are b cell progenitors?
8. What is the phagocytic complex in complemnt
9. How does the alternate pathway work in alternate pathway?
10. How does Fibrosis cause cirrhosis in the liver?
11. Whats the Epidemiology of rocky mountain fever?
12. How do u culture Chlamydia? what medium do we use?
13. Which detergent eliminates lipophilic and non-lipophilic bugs?
14. How does Elastase play a role in emphysema?
15. How many NADPH are made in TCA cycle?
16. How long does it to take for action potential to go from SA node to AV node?
17. How does Chemiosmosis make ATP?
18. Whats the type of collagen found in Kidneys?
19. What type of collagen is found in sclera?
20. Whats the func of reticulate body and elementary body?

 

[smartdude350]

1)Soln A has a pH of 7.0, & soln B has a pH of 6.0. Both the solns are of equal vol. Which of the following statement about solutions A and B is most accurate

A. A has 1/10 as many hydrogen ions as B
B. A has 10 times more hydrogen ions than B
C. A has 7/6 of the hydrogen ion conc of B
D. A has 6/7 of the hydrogen ion conc of B


2)A drug has a pK of 6.4. At a pH of 7.4, which of the following approximates the ratio of the unprotonated form(i.e. D-/HD)?

A. 0
B. 0.1
C. 1
D. 10

Ans is D.

Please explain how to solve this question?

Thanks....

 

[Doc17]

1.a dehydrated dental patient ,as a result of severe vomiting following over usage of narcotic analgesic,might present with which of the following symptoms?
-An increase in pulse rate
-an in crese in BP
-facial edema
-distended neck vein
-desire to constantly urinate

2.why hyperventilation often produces muscle spasm?
-there is too much Oxygen available
-the respiratory muscle are fatigued
-ther is not enough phosphate present
-the loss of CO2 has caused alkalosis
-the pH of the blood has dropped sharply


plz reply

 

[elmos]

i think the answer is increase in pulse rate , cause he lost a lot of fluid , i don't think the blood pressure will go up. and for sure not urinating.
correct me if i'm wrong.