NBDE 1 q's - can any1 answer??

[Twinkle1]

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.1 what divides the joint into 2 cavities?

. .2. Articular disk displacement is restricted by?

3. If mandible moves to the Right which ligament holds the condyle?

4. if teeth are in canine-canine contact, what is the position of the condyle?. .(is it away from the medial wall? / opposite to the articular eminence? in a superior position in the gleniod fossa).

.6. what causes CNS inflammation due to menigitis?

. .7. What is the normal flora of the mouth?

8. what bacteria are found in subgingival calculus?

9. How do you culture chlamydia? what medium is used?

10. Lab values for leukemia?

11. in which form is floride absorbed i the intestine?

12. what are the hormone dependant neoplasms?

13. . .what is the allergic component in latex gloves?

14 . .What atery of the ECA is not found in the carotid triangle?

15. . Normal flora of gingival sulcus?

16. in protrusive movement, what is the direction of the head of condyle? (does it lie against slope of eminence? / is it medial or lateral to it?)

17. which premolar has a wider F_L dimension than M-D?

18. whats the effects of sympathetic and parasymp stimulation on blood vessels, veins, aterioles etc?? constrict or dilate?

19. what do alpha 1 and 2 adrenergic receptrs do?

20. which detergent eliminates lipophilic and nonlipohilic organisms? Benzealkonium cloride or iodophor or isoprpyl alcohol?

21. whats the axial inclination of palatal root of max 2nd molar? distal and lingual??

22. what is the compensating curve?

23. what happens during erythopoesis - from going from proerthyoblast to mature erythroblast?--- what happens to cell size, is the cytoplasmice basohilia or acidiophilia?

24. whats the diffrence betewwn fusion and gemination? which teeth affected?

25. whats the most common type of thyroid cancer?

26. whats posterior to azygos vein?

27. increase salivation is caused by both sympathetic and parasymp? how does this happen?

28. How does influenza get its genetic diversity?? mutation or gene rearrangements?

29. what receptors does epinephrine react with?

30. which canal creates a direct entry from the oral cavity to the nasal cavity?

31. which taste receptor has the lowest threshold for taste? bitter / sour / salt or sweet?

32. what foramen connects spenoid sinus and nasal cavity?

33. what antimicrobial affects lipid and non-lipid menbrane?

34. what resembles primary syphilis?

35. whats the cytopathic effect of HIV?

36. which amino acids are not glycosylated?

27. lamina propria attached directly to periosteum in?

28. tooth with axial inclination of root most verical? central or premolar?

29. Thrombosis common of which artery supplying brain?

30. Pain related proprioception carried by which?

31. Infection from deep facial vein goes to?

32. which organs enters portal circulation?

33. cancer in jejuneum spread by lymphatics – how does it reach circulation? ----- via which vein?

34. primary movement occuring on working side when mandible moves lateral? when it protrudes?

35. influenza virus, new genetic variation due to?

36. denture wearer, atrophy of lower jaw..occlusion changes from class 2 to 3, class 1 to 3?

37. mycotic fungi – main source of transmission?

38. lymph node next to EJV?

39. what best describes an endotoxin?

40. which Rickettesia is spead by mites?

41. periodontal flora, which specific organisms?

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[dr37]

.1 what divides the joint into 2 cavities? Articular disc.

.2. Articular disk displacement is restricted by? .

.3. If mandible moves to the Right which ligament holds the condyle? TMJ Ligament .

.4. if teeth are in canine-canine contact, what is the position of the condyle?. .(is it away from the medial wall? / opposite to the articular eminence? in a superior position in the gleniod fossa) Condyle moves laterally.

.6. what causes CNS inflammation due to menigitis? .

.7. What is the normal flora of the mouth? Facultative Aerobes.

.8. what bacteria are found in subgingival calculus? Anaerobic G -ve, Bacillli n Spirochetes.

.9. How do you culture chlamydia? what medium is used? Stains with Iodine, but dnt knw the media..did read smwhr abt Eagle's Minimal media or smthn...

.10. Lab values for leukemia? .

.11. in which form is floride absorbed i the intestine?.

.12. what are the hormone dependant neoplasms? Hormone producing or hormone dependent tumors like Estrogen producing tumors, pheochromocytoma, prolactinoma.

.13. ..what is the allergic component in latex gloves? Nitrile.

.14 ..What atery of the ECA is not found in the carotid triangle? does the ques says which is present in carotid triangle?? as neck has only 2 braches of ECA.

.15. .Normal flora of gingival sulcus? Gram Positive facultative Aerobes
n some beneficial anaerobes like velionella, capnocytophaga

16. in protrusive movement, what is the direction of the head of condyle? (does it lie against slope of eminence? / is it medial or lateral to it?)

17. which premolar has a wider F_L dimension than M-D? Maxillary 1st as it is broad shouldered

18. whats the effects of sympathetic and parasymp stimulation on blood vessels, veins, aterioles etc?? constrict or dilate? ParaSym : Constricts, Symp Dilates

19. what do alpha 1 and 2 adrenergic receptrs do? alpha 1 vasoconstriction of arteries/veins n reduce motility of smooth muscle, Inc Salivary gland secetion, alpha 2 opposite

20. which detergent eliminates lipophilic and nonlipohilic organisms? Benzealkonium cloride or iodophor or isoprpyl alcohol?

21. whats the axial inclination of palatal root of max 2nd molar? distal and lingual?? Distally inclined

22. what is the compensating curve?

23. what happens during erythopoesis - from going from proerthyoblast to mature erythroblast?--- what happens to cell size, is the cytoplasmice basohilia or acidiophilia? Cell size decrease, basophilia decreases

24. whats the diffrence betewwn fusion and gemination? which teeth affected? fusion : 2 tooth buds fuse, gemination 2 crowns from one tooth, share root n root canal

25. whats the most common type of thyroid cancer? papillary followed by follicular, follicular is more maliignant

26. whats posterior to azygos vein?

27. increase salivation is caused by both sympathetic and parasymp? how does this happen?

28. How does influenza get its genetic diversity?? mutation or gene rearrangements?

29. what receptors does epinephrine react with? adrenergic receptors

30. which canal creates a direct entry from the oral cavity to the nasal cavity? nasopharynx

31. which taste receptor has the lowest threshold for taste? bitter / sour / salt or sweet? bitter

32. what foramen connects spenoid sinus and nasal cavity?

33. what antimicrobial affects lipid and non-lipid menbrane?

34. what resembles primary syphilis? herpes, chancriod, primary HIV ulcers

35. whats the cytopathic effect of HIV? Synctium formation n single cell lysis

36. which amino acids are not glycosylated?

27. lamina propria attached directly to periosteum in?

28. tooth with axial inclination of root most verical? central or premolar? Premolar

29. Thrombosis common of which artery supplying brain?

30. Pain related proprioception carried by which? free nerve endings

31. Infection from deep facial vein goes to? pterygoid plexus



39. what best describes an endotoxin? LPS by G-ve bacteria

40. which Rickettesia is spead by mites? tsutsu gamushi

Anyone please help with other questions????

 

[dentistjpr]

.1 what divides the joint into 2 cavities?

. .2. Articular disk displacement is restricted by? collateral ligaments or discal ligaments(medial and lateral set)

3. If mandible moves to the Right which ligament holds the condyle?

4. if teeth are in canine-canine contact, what is the position of the condyle?. .(is it away from the medial wall? / opposite to the articular eminence? in a superior position in the gleniod fossa).

.6. what causes CNS inflammation due to menigitis?

. .7. What is the normal flora of the mouth?

8. what bacteria are found in subgingival calculus?

9. How do you culture chlamydia? what medium is used?

10. Lab values for leukemia? chronic-100,000 per cu mm and acute 30,00-1000,000 per cu mm

11. in which form is floride absorbed i the intestine?

12. what are the hormone dependant neoplasms?

13. . .what is the allergic component in latex gloves?

14 . .What atery of the ECA is not found in the carotid triangle?

15. . Normal flora of gingival sulcus?

16. in protrusive movement, what is the direction of the head of condyle? (does it lie against slope of eminence? / is it medial or lateral to it?)

17. which premolar has a wider F_L dimension than M-D?

18. whats the effects of sympathetic and parasymp stimulation on blood vessels, veins, aterioles etc?? constrict or dilate?

19. what do alpha 1 and 2 adrenergic receptrs do?

20. which detergent eliminates lipophilic and nonlipohilic organisms? Benzealkonium cloride or iodophor or isoprpyl alcohol?
household bleach or chlorites kill both.
Lipophillic back....like hiv, hep b, rsv...killed by phenols, quaternary ammonium compounds that destroys their lipid coating.
Hydrophillic....like polio, rhino, hep A....Household bleach(sodium hypochlorite)


21. whats the axial inclination of palatal root of max 2nd molar? distal and lingual??

22. what is the compensating curve?

23. what happens during erythopoesis - from going from proerthyoblast to mature erythroblast?--- what happens to cell size, is the cytoplasmice basohilia or acidiophilia?

24. whats the diffrence betewwn fusion and gemination? which teeth affected?

25. whats the most common type of thyroid cancer?

26. whats posterior to azygos vein? thoracic duct

27. increase salivation is caused by both sympathetic and parasymp? how does this happen?

28. How does influenza get its genetic diversity?? mutation or gene rearrangements? antigenic shifts (genomic re-assortment)

29. what receptors does epinephrine react with?

30. which canal creates a direct entry from the oral cavity to the nasal cavity?

31. which taste receptor has the lowest threshold for taste? bitter / sour / salt or sweet?

32. what foramen connects spenoid sinus and nasal cavity?

33. what antimicrobial affects lipid and non-lipid menbrane?

34. what resembles primary syphilis?

35. whats the cytopathic effect of HIV?

36. which amino acids are not glycosylated?

27. lamina propria attached directly to periosteum in?

28. tooth with axial inclination of root most verical? central or premolar?

29. Thrombosis common of which artery supplying brain? most common -middle cerebral artery.....then basilar, vertebral

30. Pain related proprioception carried by which?

31. Infection from deep facial vein goes to?

32. which organs enters portal circulation? spleen, pancreas, lower portion of esophagus to anal canal.

33. cancer in jejuneum spread by lymphatics – how does it reach circulation? ----- via which vein? hepatic portal vein (maybe not sure)

34. primary movement occuring on working side when mandible moves lateral? when it protrudes?

35. influenza virus, new genetic variation due to? antigenic shifts(only in influenza A) or drifts(naturally occuring)

36. denture wearer, atrophy of lower jaw..occlusion changes from class 2 to 3, class 1 to 3?

37. mycotic fungi – main source of transmission? inhalation, not sure

38. lymph node next to EJV? Cervical

39. what best describes an endotoxin?

40. which Rickettesia is spead by mites?

41. periodontal flora, which specific organisms?

.
.
.
.
.
.
.
.

more answers please...

 

[Kash]

13. .what is the allergic component in latex gloves?.
Don't know the exact answer but its latex proteins

26. whats posterior to azygos vein?
The answer is right vagus nerve. Thoracic duct is posterior to esophagus.

29. what receptors does epinephrine react with?
Adrenergic (sympathetic)

32. what foramen connects spenoid sinus and nasal cavity?
Sphenoethmoidal recess

Please correct me if i am wrong.
39. what best describes an endotoxin?
Endotoxins are lipopolysacchride component of the cell wall. (They activate the alternate complement pathway)

40. which Rickettesia is spead by mites?
2 diseases can spread by mites:
a) Rickettsialpox (spotted fever group) - may have oral manifestations.
b) Scrub typhus (typhus group)

Please correct me if i am wrong.

 

[dentistjpr]

glycosyted aa include threonine, serine and aspargine

 

[mrswinidm]

Hi
2009 dental decks Biochemistry/physiology Rsp S Card no. 283

A patient comes into your office breathing hard after running across the street to get to his appointment on time. Which of the following would best describe this patient?

A. Hypocapnea
B. Dyspnea
C. Hypercapnea (ans)
D. Hyperapnea

My answer choice will be hyperapnea since patient is breathing hard. (the increase breathing (rate and depth) due to metabolic demand will be hyperapnea)
Any idea would be appreciated. Thanks in advance.

 

[Twinkle1]

.1. which tract goes uncrossed in spinal cord? vestibulospinal or spinocerebellar?

2. histone synthesis occurs in which phase of cell cycle?? can you explain whats happening in G1 and G2?

3. in forceful clenching of teeth what muscles are affected (apart from masseter)??

4. protein modification takes place in which organelle? ER or Golgi??

5. which type of occlusion causes anterior teeth to disocclude most posterior teeth? class 1, 2 or 3?

6. the movements within the limits of the ligaments control is called? -- is this enevelope of motion?

7. cytokines involed in bone resorption? only IL-1??

8. field of vision defect, due to tumor where?

9. platelet aggregation..intial stage is? and what are the main stages and what they involve?

10. tumor grade is?

11. Muous cells seen through all of GI tract? where are they not found?

12. Oblique facial cleft is due to failure of fusion what? (is oblique facial cleft different to cleft lip?)

13. Carinoma of larynx will affect which nodes? where does it metastasize to?

14. which muscles are involved in blinking?

15. Nerve to ptergoid canal, contains which nerves?

16. How does metaplasia of cells occur in cancer?

17. what is anterior to the ethmoid sinuses?

18. how many unpaired sinuses are there?

19. Blood supply to liver? -- is this hepatic artery and portal vein only??

20. Which part of the oral cavity is directly attached to periosteum?

21. what is the superior border of the submandibulat triangle?

22. what forms floor of carotid triangle?

23. main difference between small and large intestine?...in terms of hitology - are the layers the same?

24. Greatest osmotic pressure is found in what part of nephron?


.

 

[dentgod]

.1. which tract goes uncrossed in spinal cord? vestibulospinal or spinocerebellar? vestibulospinal.

.2. histone synthesis occurs in which phase of cell cycle?? can you explain whats happening in G1 and G2? s ..phase makes the histone .

.3. in forceful clenching of teeth what muscles are affected (apart from masseter)?? medial pterygoid.

.4. protein modification takes place in which organelle? ER or Golgi?? ER.

.5. which type of occlusion causes anterior teeth to disocclude most posterior teeth? class 1, 2 or 3? class3.

.6. the movements within the limits of the ligaments control is called? -- is this enevelope of motion? .

.7. cytokines involed in bone resorption? only IL-1?? .

.8. field of vision defect, due to tumor where?.

.9. platelet aggregation..intial stage is? and what are the main stages and what they involve?.

.10. tumor grade is?.

.11. Muous cells seen through all of GI tract? where are they not found? .

.12. Oblique facial cleft is due to failure of fusion what? (is oblique facial cleft different to cleft lip?).

.13. Carinoma of larynx will affect which nodes? where does it metastasize to?.

.14. which muscles are involved in blinking? orbicularis oculi.

.15. Nerve to ptergoid canal, contains which nerves? lesser petrosal n greater petrosal nerves make the nerve of pterygoid.

.16. How does metaplasia of cells occur in cancer?.

.17. what is anterior to the ethmoid sinuses?.

.18. how many unpaired sinuses are there?.

.19. Blood supply to liver? -- is this hepatic artery and portal vein only?? yes.

.20. Which part of the oral cavity is directly attached to periosteum? hard palate.

.21. what is the superior border of the submandibulat triangle? .

.22. what forms floor of carotid triangle?.

.23. main difference between small and large intestine?...in terms of hitology - are the layers the same? villi present in the small intestine alone but not in the large intestine .

.24. Greatest osmotic pressure is found in what part of nephron? .

pls feel free to correct me n go ahead n answer the left out.

 

[dentgod]

oblique facial cleft is the exposed naolacrimal duct due to the non fusion of the lateral nasal process n the maxillary process. But the cleft lip is the failure of fusion of the maxillary process with the medial nasal process. correct me if I'm wrong.

 

[dentgod]

floor of the carotid triangle is formes by the middle and lower pharyngeal constrictors.
structures passin thru wud be the superior laryngeal, external laryngeal n int.laryngeal nerve

 

[pbkal]

really confused........
normal flora of the mouth-is it not facultative anaerobes??????
pls clear this.

 

[dentgod]

unpaired sinuses -tentorial sinus n sphenoidal sinus
paired paranasal air sinuses - maxillary. frontal n ethmoidal.

laryngeal ca wud metastasize to the regional cervical lymph nodes

I'm tryin my best to get the correct answers if anybody feels its incorrect go ahead n correct me.

 

[IMPACT]

[QUOTE=dentgod;8402455]unpaired sinuses -tentorial sinus n sphenoidal sinus
paired paranasal air sinuses - maxillary. frontal n ethmoidal.

laryngeal ca wud metastasize to the regional cervical lymph nodes

I'm tryin my best to get the correct answers if anybody feels its incorrect go ahead n correct me.[/QUOTE]

Arent you mixing up dural venous sinuses and paranasal sinuses?
http://en.wikipedia.org/wiki/Sinus

 

[opencontact]

Does anyone know if bone fracture healing is considered intramembranous or endochondral ossification? Really confused... Thx.

 

[dentgod]

[QUOTE=dentgod;8402455]unpaired sinuses -tentorial sinus n sphenoidal sinus
paired paranasal air sinuses - maxillary. frontal n ethmoidal.

laryngeal ca wud metastasize to the regional cervical lymph nodes

I'm tryin my best to get the correct answers if anybody feels its incorrect go ahead n correct me.

Arent you mixing up dural venous sinuses and paranasal sinuses?
http://en.wikipedia.org/wiki/Sinus[/QUOTE]
since the question didn't specify i did it.

 

[btizzels]

Hi
2009 dental decks Biochemistry/physiology Rsp S Card no. 283

A patient comes into your office breathing hard after running across the street to get to his appointment on time. Which of the following would best describe this patient?

A. Hypocapnea
B. Dyspnea
C. Hypercapnea (ans)
D. Hyperapnea

My answer choice will be hyperapnea since patient is breathing hard. (the increase breathing (rate and depth) due to metabolic demand will be hyperapnea)
Any idea would be appreciated. Thanks in advance.

Apnea means you stop breathing...

Hypercapnea means high CO2, which you would expect from running.. and the high CO2 causes chemoreceptors to increase breathing rate... and since it has to go through these receptors... breaking rate takes a while to catch up... like when you run up a flight of stairs you are fine running up and then like 5 seconds after reaching the top u start breathing hard... Hope that helps...

 

[mrswinidm]

Thanks Btizzels for your reply. I think I should just think straight forward. I basically understood like you explain before but got really confused after studying the NBDE first aid.
Biochemistry-physiology ---> respiratory physiology -----> pag. 367 respiratory conditions table

 

[orthoperio]

floor of the carotid triangle is formes by the middle and lower pharyngeal constrictors.
structures passin thru wud be the superior laryngeal, external laryngeal n int.laryngeal nerve

also str passing thru carotid triangle

IJV
upper part of CCA which bifurcates at the level ot thyroid cart ,
br of ECA ( sup thyroid, lingual , facial , asc pharyngeal arteries)
vagus nr
Hypoglossal nr
and the rest , mentioned

 

[KOM]

Greatest osmotic pressure is found in what part of the nephron?

Anybody?

 

[pbkal]

protein modification takes place in ER or golgi??

i think ans is golgi.pls post the right ans.

 

[mrswinidm]

protein modification takes place in ER or golgi??

i think ans is golgi.pls post the right ans.

u r right. protein synthesis is in ER and modification is in golgi. .

 

[missmile]

if a person has normal musculature but difficulty in swallowing,which nerves could be tested for function?
a.vagus n splanchnic
b.vagus n glossopharyngeal
c.phrenic n vagus
d.hypoglossal n vagus.
here the ans given as choice (a).
could some one help me..
i think it z choice (b).
thanq in advance
waiting 4 som explanation🙂

 

[Kash]

if a person has normal musculature but difficulty in swallowing,which nerves could be tested for function?
a.vagus n splanchnic
b.vagus n glossopharyngeal
c.phrenic n vagus
d.hypoglossal n vagus.
here the ans given as choice (a).
could some one help me..
i think it z choice (b).
thanq in advance
waiting 4 som explanation🙂

The upper 1/3rd of the esophagus is striated muscle innervated by vagus nerve and lower 1/3 is smooth muscle from splanchnic mesoderm innervated by splanchnic plexus. Vagus nerve has sensory and motor functions. Therefore, motor fibers innervate muscles of palate, pharynx which aids in swallowing. (from kaplan)

 

[pbkal]

u r right. protein synthesis is in ER and modification is in golgi. .

thanks for the confirmation

 

[missmile]

The upper 1/3rd of the esophagus is striated muscle innervated by vagus nerve and lower 1/3 is smooth muscle from splanchnic mesoderm innervated by splanchnic plexus. Vagus nerve has sensory and motor functions. Therefore, motor fibers innervate muscles of palate, pharynx which aids in swallowing. (from kaplan)

thanq very much kash,
i hav seen that explanation i do accept that the vagus n splanchnic take part in swallowing but..wat im thinking is ..pharynx is also innervated by sensory fibres of 9th nerve..in dat case 9th n 10th also will be the ans...isn't it?
plz correct me....where im goin wrong.
thanks alot.

 

[pbkal]

really confused........
normal flora of the mouth-is it not facultative anaerobes??????
pls clear this.

..

 

[Kash]

..

What comes to my mind is ANAEROBIC (not facultative)

Normal flora of the mouth
Streptococcus, Bacteriodes, Veillonella, Fusobacterium, Peptostreptococcus,
Actinomyces.

 

[neen]

really confused........
normal flora of the mouth-is it not facultative anaerobes??????
pls clear this.

That's what I thought too. I think the answer is facultative anaerobes

 

[pbkal]

That's what I thought too. I think the answer is facultative anaerobes

yess!!ans is facultative anaerobes.question from previous paper.

 

[dentone]

hey der....Qs r good...requires thnkin...nywayz..ve u already given ur examz...or r plannin to giv when....if u guide me wid me info...coz evn m plannin to give the exam in oct ths yr....it ll b rely grateful