anatomy questions

This forum made possible through the generous support of SDN members, donors, and sponsors. Thank you.
P

pbkal

Full Member
10+ Year Member
15+ Year Member
Joined
Feb 15, 2008
Messages
791
Reaction score
0
Members do not see this ad.
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??
 
Last edited:
Sort by date Sort by votes
pbkal said:
i thought the same.someone pls confirm the answer...
and also pls answer the above questions...
Click to expand...
superior mesenteric artery supplies the intestine from the lower part of the duodenum through two-thirds of the transverse colon, as well as the pancreas.(also the ascending colon)http://en.wikipedia.org/wiki/Superior_mesenteric_artery

inferior mesenteric artery, often abbreviated as IMA, supplies the large intestine from the left colic (or splenic) flexure to the upper part of the rectum, which includes the descending colon, the sigmoid colon, and part of the rectum.

hope it helps..
 
Upvote 0 Downvote
pbkal said:
please answer these questions

1) Which of the following Bacteria are notable for their fluorescent pigments and their resistance to disinfectants and antibiotics ?

a) Staphyloccocci
b) Pseudomonas
c) Bacteriodes
d) Treponema

Shouldn't the answer be pseudomonas here?? I read it produces flouroscent pigments and also it well known for its resistance??
Click to expand...
 
Upvote 0 Downvote
Pseudomonas produces the greenish pigments, thts why i picked up this answer..

P. aeruginosa secretes a variety of pigments, including pyocyanin (blue-green), fluorescein (yellow-green and fluorescent, now also known as pyoverdin), and pyorubin (red-brown) (wiki)
 
Last edited:
Upvote 0 Downvote
need help with this ques
atropine prevents secretion of saliva resulting from stimulation of the chordae tympani because of
a]denatures salivary gland protein
b]prevents action of acetylcholine on the secreting cells
c]prevents release of acetycholine by parasympathetic postganglionic fibres
d]prevents release of acety..... by sympathetic postganglionic fibres
e]prevents release of acety.... in autonomic ganglia


is it c?????
 
Upvote 0 Downvote
pb2007 said:
need help with this ques
atropine prevents secretion of saliva resulting from stimulation of the chordae tympani because of
a]denatures salivary gland protein
b]prevents action of acetylcholine on the secreting cells
c]prevents release of acetycholine by parasympathetic postganglionic fibres
d]prevents release of acety..... by sympathetic postganglionic fibres
e]prevents release of acety.... in autonomic ganglia


is it c?????
Click to expand...

i agree with ur answer.atropine is a competitive antagonist of muscarinic acetylcholine receptors.lowers the parasympathetic activity of all muscles and glands.
 
Upvote 0 Downvote
pbkal said:
i agree with ur answer.atropine is a competitive antagonist of muscarinic acetylcholine receptors.lowers the parasympathetic activity of all muscles and glands.
Click to expand...
thnks pbkal ,jst wanted to confirm


cementum does hav incremental lines bt i couldnt find a particular name for them .in case u hav orbans oral histo buk ,u can go to chap on cementum .it says both cellular n acellular cementum r seperated by incremental lines into two layers,which indicate periodic formation.
 
Upvote 0 Downvote
its true (c)!

and according to ur question in micro,,, iam sorry man was confused with staph. bec. its also antibiotic resistance so the correct answer is pseudomonas eurigonosa,,,yeahhhhh !!!
 
Upvote 0 Downvote
pb2007 said:
thnks pbkal ,jst wanted to confirm


cementum does hav incremental lines bt i couldnt find a particular name for them .in case u hav orbans oral histo buk ,u can go to chap on cementum .it says both cellular n acellular cementum r seperated by incremental lines into two layers,which indicate periodic formation.
Click to expand...

thanks pb2007.
 
Upvote 0 Downvote
If lesion is present proximal to greater petrosal and chorda tympani , patient experiences

a) Decreased taste ( anterior 2/3 )
b) hyperacusis ( due to stepdius muscle paralysis )
c) Decreased salivation on affected side ( though not clinically apparent if other salivary glands intact )
d) all of the above

Please answer
 
Upvote 0 Downvote
which of the following actions is at least dependent on an intact long thoracic nerve?
depression of the scapula
retraction of the scapula
protraction of the scapula
medial rotation of the humerus
lateral rotation of the humerus

pls ans..
 
Upvote 0 Downvote
r u sure u r not missing any word frm the ques
coz long thoracic supplies serratus anterior which helps in protraction and also rotation .so answer should be one of the first three choices.i'm confused.i'l go with choice C.
 
Last edited:
Upvote 0 Downvote
pb2007 said:
r u sure u r not missing any word frm the ques
coz long thoracic supplies serratus anterior which helps in protraction and also rotation .so answer should be one of the first three choices.i'm confused.i'l go with choice C.
Click to expand...

yess!! u r right.......ans is given as (c).
i thought serratus helps in rotation.i was not aware of protraction.
the question says partially helpful.......so,might be ur choice is right...
thanks for clearing...

pls answer the other question also....
 
Upvote 0 Downvote
pbkal said:
If lesion is present proximal to greater petrosal and chorda tympani , patient experiences

a) Decreased taste ( anterior 2/3 )
b) hyperacusis ( due to stepdius muscle paralysis )
c) Decreased salivation on affected side ( though not clinically apparent if other salivary glands intact )
d) all of the above

Please answer
Click to expand...
sumone plz answer this ques
 
Upvote 0 Downvote
hey pb2007,,,
havnt revised anatomy yet its been a while ,,,i would go with all of the above(D) but not sure and when ill have the conformation ill post it !!! what do u think ?is it (d) ???
 
Upvote 0 Downvote
wadent said:
hey pb2007,,,
havnt revised anatomy yet its been a while ,,,i would go with all of the above(D) but not sure and when ill have the conformation ill post it !!! what do u think ?is it (d) ???
Click to expand...
sorry wadent i'm too confused to write any choice .
 
Upvote 0 Downvote
pbkal said:
If lesion is present proximal to greater petrosal and chorda tympani , patient experiences

a) Decreased taste ( anterior 2/3 )
b) hyperacusis ( due to stepdius muscle paralysis )
c) Decreased salivation on affected side ( though not clinically apparent if other salivary glands intact )
d) all of the above

Please answer
Click to expand...
Hi! pkbal,
Lesions of the Facial nerve distal to the stylomastoid foramen lead to:
Unilateral facial paralysis only.
Taste,salivation and dampening of the sound(hyperacusis) are spared b'coz the branches that innervate the tongue,salivary glands and stapedius muscle arrive proximal to this point. So the answer must be all of the above.
 
Upvote 0 Downvote
hey twinklelitle star !!
cooooooooool i knew it that they r all right ( even though i doubt myself ),,, its been a very long time havnt revised anatomy yet !!! but thanks for clearin it,,because iam was gona do it sooner or later,,,
ok pb2007 here u go my friend we r both happy to see this !!!
 
Upvote 0 Downvote
twinklestar123 said:
Hi! pkbal,
Lesions of the Facial nerve distal to the stylomastoid foramen lead to:
Unilateral facial paralysis only.
Taste,salivation and dampening of the sound(hyperacusis) are spared b'coz the branches that innervate the tongue,salivary glands and stapedius muscle arrive proximal to this point. So the answer must be all of the above.
Click to expand...

hi twinklestar123
thanks for clearing the doubt.
but,according to ur explanation-the ans should be none of the above.
facial nerve gives branches greater petrosal,nerve to stapedius,chorda tympani in the internal acoustic meatus.and since question says lesion is proximal to greater petrosal and chorda tympani,so all r spared........means pt is not affected with any of the options mentioned in the question,right???????/
so,instead of all of the above,none of the above should be the option,right....???????
pls correct if im going wrong.........
 
Upvote 0 Downvote
transverse colon and rectum are supplied by ?
SMA or IMA ?

decks says IMA answer
NBDE first aid says SMA as answer.
i think decks is right........pls confirm.



hey pbkal,
ur right i read it a week ago decks says somthin nbde1 book says another i would go with (ima) common sense why it should be (sma)..
 
Upvote 0 Downvote
pbkal said:
yess!! u r right.......ans is given as (c).
i thought serratus helps in rotation.i was not aware of protraction.
the question says partially helpful.......so,might be ur choice is right...
thanks for clearing...

pls answer the other question also....
Click to expand...


hi thanks both but isn't the q about the least ? can you explain more plz?

which of the following actions is at least dependent on an intact long thoracic nerve?
depression of the scapula
retraction of the scapula
protraction of the scapula
medial rotation of the humerus
lateral rotation of the humerus
 
Upvote 0 Downvote
pb2007 said:
need help with this ques
atropine prevents secretion of saliva resulting from stimulation of the chordae tympani because of
a]denatures salivary gland protein
b]prevents action of acetylcholine on the secreting cells
c]prevents release of acetycholine by parasympathetic postganglionic fibres
d]prevents release of acety..... by sympathetic postganglionic fibres
e]prevents release of acety.... in autonomic ganglia


is it c?????
Click to expand...

In my opinion,The answer is B) ...... atropine blocks the action of ACH. It is a competitive antagonist for the muscarinic ACH receptor. The ach is released by para sym but action is blocked due to atropine.
Correct me if I am wrong.
 
Upvote 0 Downvote
bestluck said:
hi thanks both but isn't the q about the least ? can you explain more plz?

which of the following actions is at least dependent on an intact long thoracic nerve?
depression of the scapula
retraction of the scapula-answer
protraction of the scapula
medial rotation of the humerus
lateral rotation of the humerus
Click to expand...
I think the answer is choice is the retraction of the scapula. Becoz the long thoracic nerve which supplies the serratus anterior is the muscle used in pulling the scapula forward and downward. So, the choices A and C are ruled out. For the medial rotation of humerus the muscles used are pect.major, latis.dorsi and the teres moajor. For th lateral rotation teres minor. For which the innervations will differ. Hope it helps. correct me if I'm wrong.
 
Upvote 0 Downvote
colours99 said:
In my opinion,The answer is B) ...... atropine blocks the action of ACH. It is a competitive antagonist for the muscarinic ACH receptor. The ach is released by para sym but action is blocked due to atropine.
Correct me if I am wrong.
Click to expand...



even i agree... answer should be b....
 
Upvote 0 Downvote
colours99 said:
In my opinion,The answer is B) ...... atropine blocks the action of ACH. It is a competitive antagonist for the muscarinic ACH receptor. The ach is released by para sym but action is blocked due to atropine.
Correct me if I am wrong.
Click to expand...

yess,answer is b.
 
Upvote 0 Downvote
dentgod said:
I think the answer is choice is the retraction of the scapula. Becoz the long thoracic nerve which supplies the serratus anterior is the muscle used in pulling the scapula forward and downward. So, the choices A and C are ruled out. For the medial rotation of humerus the muscles used are pect.major, latis.dorsi and the teres moajor. For th lateral rotation teres minor. For which the innervations will differ. Hope it helps. correct me if I'm wrong.
Click to expand...

answer is given as protraction of scapula.is ASDA key wrong??
 
Upvote 0 Downvote
Which amino acid possess a hydrophobic side chain ?
A) Lysine
B) Cysteine
C) Leucine
D) Hydroxyproline
E) Glycine

Please answer this



 
Last edited:
Upvote 0 Downvote
Are you sure they are asking "which AA has a hydrophobic side chain" and not "which AA does not have hydrophobic side chain" because all of them except lysine have hydrophobic side chains.

pbkal said:
Which amino acid possess a hydrophobic side chain ?
A) Lysine
B) Cysteine
C) Leucine
D) Hydroxyproline
E) Glycine

Please answer this
Click to expand...
 
Upvote 0 Downvote
twinklestar123 said:
Can someone please help me with this...
In Multiple myeloma is there increase in acid phosphatase?
Click to expand...


Prostate Hyperplasia : Inc in Acid phosphatase
Pagets' disease : Inc in Alk phosphatase : indicates active bone formation, thts why also higher levels in chidlren and pregnant women.

Multiple myeloma has increased bence jones proteins.
 
Upvote 0 Downvote
dentistjpr said:
Are you sure they are asking "which AA has a hydrophobic side chain" and not "which AA does not have hydrophobic side chain" because all of them except lysine have hydrophobic side chains.
Click to expand...

answer is given as luecine.can someone pls explain.....
i thought both luecine and glycine has hydrophobic side chain.
 
Upvote 0 Downvote
Glycine can fit into hydrophilic or hydrophobic environments, due to its single hydrogen atom side chain.(check wiki)

Lysine is obviously out of question and so is hydroxyproline..

Leucine has a aliphatic side chain(non linear) while cysteine has thiol. Now this is confusing...either there is more to the question or i just need to learn it this way because i cannot find a reason. Is this from an ASDA paper?


pbkal said:
answer is given as luecine.can someone pls explain.....
i thought both luecine and glycine has hydrophobic side chain.
Click to expand...
 
Upvote 0 Downvote
dentistjpr said:
Glycine can fit into hydrophilic or hydrophobic environments, due to its single hydrogen atom side chain.(check wiki)

Lysine is obviously out of question and so is hydroxyproline..

Leucine has a aliphatic side chain(non linear) while cysteine has thiol. Now this is confusing...either there is more to the question or i just need to learn it this way because i cannot find a reason. Is this from an ASDA paper?
Click to expand...

thanku very much dentistjpr.
yess!!its a question from ASDA.
 
Upvote 0 Downvote
As compared to the cross section of the maxillary central incisor at the cervical line, the cross section of the mandibular central is:
A. more flattened mesiodistally
B. more flattened faciolingually
C. rounder
D. almost identical
 
Upvote 0 Downvote
pbkal said:
As compared to the cross section of the maxillary central incisor at the cervical line, the cross section of the mandibular central is:
A. more flattened mesiodistally
B. more flattened faciolingually
C. rounder
D. almost identical
Click to expand...

Shouldn't it be A.more flattened mesiodistally
 
Upvote 0 Downvote
twinklestar123 said:
Shouldn't it be A.more flattened mesiodistally
Click to expand...

hi twinklestar
yess!!u r right........can u pls explain it.............
just that its not striking my mind..........how?/
i thought mand CI root is narrow mesiodistally and wide faciolingually....so,ans should be flattened faciolingually.......
pls tell where am i going wrong........thanku.
 
Upvote 0 Downvote
pbkal said:
hi twinklestar
yess!!u r right........can u pls explain it.............
just that its not striking my mind..........how?/
i thought mand CI root is narrow mesiodistally and wide faciolingually....so,ans should be flattened faciolingually.......
pls tell where am i going wrong........thanku.
Click to expand...

Yes mesiodistally it is narrow and so faciolingually it becomes wider right?Maybe when you look at the cross section or the diagram given in Wheelers will surely help you.Or maybe you are exhausted with all the studying.Take a 5 min break.Come back and take a look at the diagram.:hardy:
 
Upvote 0 Downvote
twinklestar123 said:
Yes mesiodistally it is narrow and so faciolingually it becomes wider right?Maybe when you look at the cross section or the diagram given in Wheelers will surely help you.Or maybe you are exhausted with all the studying.Take a 5 min break.Come back and take a look at the diagram.:hardy:
Click to expand...

hey twinklestar123
thanks a lot.i think i got it now.........since,the question says-in cross section....ans is flattened mesiodistally...........
 
Upvote 0 Downvote
pls ans this

which of the following cells contains large amount of rough surfaced ER?
lymphocyte
eosinophil
plasma cell
skeletal muscle cell
reticuloendothelial cell
 
Upvote 0 Downvote
You must log in or register to reply here.

Similar threads

B
  • Question Question
Questions about the ADEX exam
Replies
0
Views
2K
boooberry
B
T
CDCA failure question - help!
Replies
1
Views
4K
bloopblop
bloopblop
Alpha Centauri
  • Question Question
Dental Anatomy Section and Occlusion Preparation
Replies
1
Views
1K
bracketbuster68
B
S
  • Question Question
Occlusion question help!
Replies
2
Views
1K
averageasian
averageasian
M
  • Question Question
NYU Langone AEGD Question
Replies
0
Views
2K
me.123
M
Top