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[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.

 

[dontist]

i think its 4.. if somebody thinks otherwise..i will be glad if you could plz explain..thanks.

triangular ridge is the ridge running from the cusp tip down.. in the fossa or fissure.

as the mand 1st molar has 5 cusps.. there will be 5 triangular ridges!!

hope this clears ur doubt...

i asked the question from decks only..but i didn't understand why it should be distobuccal sulcus. if u can explain, then it'll be very helpful. otherwise i'll just have to memorize it!

and for the previous question, it should be mx. CI is the right choice.

if u imagine the occlusion properly and see u wil figure out...

i would like to advise if u have some pictures or some software for occlusion.. if u r weak in this topic tht will be helpful i think....

more about the explanation.. if u look in decks its given that oblique ridge passes through distobusccal sulcus.. so on working side.. it will apply for same.

it can be a different scenario of its for non working or for some other tooth.

 

[dr.internationa]

On the crown of mand molar,facial cusp ridge of ML cusp originates at cusp tip and normally terminates at which of the following?

A. Lingual groove
B. Halfway down the lingual surface
C. Mesial portion of central groove.

very confusing?

 

[dontist]

On the crown of mand molar,facial cusp ridge of ML cusp originates at cusp tip and normally terminates at which of the following?

A. Lingual groove
B. Halfway down the lingual surface
C. Mesial portion of central groove.

very confusing?

is tht correct answer??/

 

[ddss87]

Please confirm this answer because i think the answer in decks is wrong.
In a patient of phenylketonuria,
A. Both phenylalanine and tyrosine become essential amino acids.
B. Tyrosine becomes an essential amino acid, but not phenylalanine.
C. Phenylalanine becomes an essential amino acid, but not tyrosine.
D. Both are not essential.

the answer given is A. but shouldn't it be B?

 

[dr.internationa]

is tht correct answer??/

thanks dontist..thats what i thought too..can someone else also confirm?

 

[colours99]

The correct answer is A. Phenylalanine is an essential AA. But since tyrosine is made from phenylanine in the body,it is non essential aa. But in Phenylketonuria , due to def. of enzyme PAH, Phenylalanine is not metabolized to tyrosine. So it must be supplied in food.

Please confirm this answer because i think the answer in decks is wrong.
In a patient of phenylketonuria,
A. Both phenylalanine and tyrosine become essential amino acids.
B. Tyrosine becomes an essential amino acid, but not phenylalanine.
C. Phenylalanine becomes an essential amino acid, but not tyrosine.
D. Both are not essential.

the answer given is A. but shouldn't it be B?

 

[terminal]

hey guys does asda M and N series have just 200 ques?? or i missed out~!

 

[viplilia]

The correct answer is A. Phenylalanine is an essential AA. But since tyrosine is made from phenylanine in the body,it is non essential aa. But in Phenylketonuria , due to def. of enzyme PAH, Phenylalanine is not metabolized to tyrosine. So it must be supplied in food.

thank you very much for explanation

 

[ddss87]

The correct answer is A. Phenylalanine is an essential AA. But since tyrosine is made from phenylanine in the body,it is non essential aa. But in Phenylketonuria , due to def. of enzyme PAH, Phenylalanine is not metabolized to tyrosine. So it must be supplied in food.

hey. that was pretty much crystal clear. thanks a lot!

 

[ddss87]

Which type of glands contain parietal cells?
A. Pyloric glands
B. Gastric glands
C. Cardiac glands
D. None of the above; these cells are not a part of glands

the answer given is D. but the explanation is vague. initially, it's written that these cells are a part of epithelium and not any glands. but they've also written that different types of cells in gastric glands are parietal, mucus and chief cells.

so i'm confused between B and D. please confirm.

 

[rose82]

Which type of glands contain parietal cells?
A. Pyloric glands
B. Gastric glands
C. Cardiac glands
D. None of the above; these cells are not a part of glands

the answer given is D. but the explanation is vague. initially, it's written that these cells are a part of epithelium and not any glands. but they've also written that different types of cells in gastric glands are parietal, mucus and chief cells.

so i'm confused between B and D. please confirm.

From what I've read in kaplan,first aid,decks....gastric glands contain parietal cells,mucus and chief cells.pyloric contains intrinsic factor.
Even though its a part of the epithelium,doesnt it mean its a part of the epithelium of the gland?I dont know,if its an asda q...they say its gold standard,but i agree with you...

 

[dontist]

i think it should b gastric glands...

there is something wrong with either question or answer...

is this ASDA question??


guys can anyone tell me the course of abdominal aorta??

i mean in decks it says its terminates by right and left iliac artery...

while in someother page it says it has 3 branches.. the celiac trunk, superior and inferior mesentric..

i am confused what are the branches of abdominal aorta and.. is celiac and iliac artery different or one and the same??? if diff what are their origin and where they supply??

pl tell me buddies....

 

[dontist]

The correct answer is A. Phenylalanine is an essential AA. But since tyrosine is made from phenylanine in the body,it is non essential aa. But in Phenylketonuria , due to def. of enzyme PAH, Phenylalanine is not metabolized to tyrosine. So it must be supplied in food.

good explanation...👍👍👍

 

[colours99]

Branches.—The branches of the abdominal aorta may be divided into three sets: visceral, parietal, and terminal.[SIZE=-2][/SIZE]Visceral Branches: Celiac,Superior Mesenteric. Inferior Mesenteric,Middle Suprarenals,Renals,Internal Spermatics,Ovarian (in the female).
Parietal Branches: Lumbars, Inferior Phrenics, Middle Sacral.

Terminal Branches. Common Iliacs.

Of the visceral branches, the celiac artery and the superior and inferior mesenteric arteries are unpaired, while the suprarenals, renals, internal spermatics, and ovarian are paired. Of the parietal branches the inferior phrenics and lumbars are paired; the middle sacral is unpaired. The terminal branches are paired.

i think it should b gastric glands...

there is something wrong with either question or answer...

is this ASDA question??


guys can anyone tell me the course of abdominal aorta??

i mean in decks it says its terminates by right and left iliac artery...

while in someother page it says it has 3 branches.. the celiac trunk, superior and inferior mesentric..

i am confused what are the branches of abdominal aorta and.. is celiac and iliac artery different or one and the same??? if diff what are their origin and where they supply??

pl tell me buddies....

 

[dontist]

Branches.—The branches of the abdominal aorta may be divided into three sets: visceral, parietal, and terminal.Visceral Branches: Celiac,Superior Mesenteric. Inferior Mesenteric,Middle Suprarenals,Renals,Internal Spermatics,Ovarian (in the female).
Parietal Branches: Lumbars, Inferior Phrenics, Middle Sacral.

Terminal Branches. Common Iliacs.

Of the visceral branches, the celiac artery and the superior and inferior mesenteric arteries are unpaired, while the suprarenals, renals, internal spermatics, and ovarian are paired. Of the parietal branches the inferior phrenics and lumbars are paired; the middle sacral is unpaired. The terminal branches are paired.

👍👍👍 THANKS.. PERFECT EXPLANATION BUDDY

 

[ddss87]

From what I've read in kaplan,first aid,decks....gastric glands contain parietal cells,mucus and chief cells.pyloric contains intrinsic factor.
Even though its a part of the epithelium,doesnt it mean its a part of the epithelium of the gland?I dont know,if its an asda q...they say its gold standard,but i agree with you...

this is a question from the decks. i also read the exact same thing in kaplan and first aid. it's the explanation in decks that confused me. but i guess since everyone is agreeing with gastric glands, maybe the answer printed is wrong.
i found a couple of other typing mistakes in decks too.
thanks a lot! 🙂

 

[ddss87]

Which of the following are the receptors that are used in sensing continuous pressure while scaling?
Which of the following are the receptors used when you are manipulating a scaler in your fingers?
A. Pacinian corpuscles
B. Meissner's corpuscles
C. Ruffini's end organs
D. Merkel discs
E. Hair follicle receptors

 

[dontist]

now this is tough.. i hope u did not found on ASDA papers... 😱

 

[godblessus]

Which of the following are the receptors that are used in sensing continuous pressure while scaling?
Which of the following are the receptors used when you are manipulating a scaler in your fingers?
A. Pacinian corpuscles (ans)
B. Meissner's corpuscles
C. Ruffini's end organs
D. Merkel discs
E. Hair follicle receptors

Pacinian corpuscles detect gross pressure changes and vibrations and are rapidly adapting (phasic) receptors. Any deformation in the corpuscle causes action potentials to be generated, by opening pressure-sensitive sodium ion channels in the axon membrane. This allows sodium ions to influx in, creating a receptor potential.

These corpuscles are especially susceptible to vibrations, which they can sense even centimeters away. [1] Their optimal sensitivity is 250 Hz and this is the frequency range generated upon finger tips by textures made of features smaller than 200 µms.[2] Pacinian corpuscles cause action potentials when the skin is rapidly indented but not when the pressure is steady, due to the layers of connective tissue that cover the nerve ending [1]. It is thought that they respond to high velocity changes in joint position.

Pacinian corpuscles have a large receptive field on the skin's surface with an especially sensitive center [1]. They only sense stimuli that occur within this field.

 

[ddss87]

Pacinian corpuscles detect gross pressure changes and vibrations and are rapidly adapting (phasic) receptors. Any deformation in the corpuscle causes action potentials to be generated, by opening pressure-sensitive sodium ion channels in the axon membrane. This allows sodium ions to influx in, creating a receptor potential.

These corpuscles are especially susceptible to vibrations, which they can sense even centimeters away. [1] Their optimal sensitivity is 250 Hz and this is the frequency range generated upon finger tips by textures made of features smaller than 200 µms.[2] Pacinian corpuscles cause action potentials when the skin is rapidly indented but not when the pressure is steady, due to the layers of connective tissue that cover the nerve ending [1]. It is thought that they respond to high velocity changes in joint position.

Pacinian corpuscles have a large receptive field on the skin's surface with an especially sensitive center [1]. They only sense stimuli that occur within this field.

thank u for the explanation. u haven't answered the 2nd question.
this question is from decks but the answer given i thought was wrong.

 

[ddss87]

one more question please.

Which of the following is a water soluble vitamin that acts as an essential coenzyme in many oxidation-reduction reactions involved with carbohydrate metabolism?
A. Folacin (folic acid)
B. Riboflavin (vit. B2)
C. Niacin
D. Thiamine (vit. B1)

The answer given is B. Why can't it be C?? when both, FMN/FAD and NAD+/NADP+ are involved in oxid-red. reactions in carb metabolism.

 

[aathmashree]

Which of the following are the receptors that are used in sensing continuous pressure while scaling?
Which of the following are the receptors used when you are manipulating a scaler in your fingers?
A. Pacinian corpuscles
B. Meissner's corpuscles
C. Ruffini's end organs
D. Merkel discs
E. Hair follicle receptors

pacinian carpusles r meant for pressure, course touch ,vibrations and tension,,,,,,,

 

[aathmashree]

one more question please.

Which of the following is a water soluble vitamin that acts as an essential coenzyme in many oxidation-reduction reactions involved with carbohydrate metabolism?
A. Folacin (folic acid)
B. Riboflavin (vit. B2)
C. Niacin
D. Thiamine (vit. B1)

The answer given is B. Why can't it be C?? when both, FMN/FAD and NAD+/NADP+ are involved in oxid-red. reactions in carb metabolism.

niacin , a constituent of nad and nadp involved only in redox reaction, not in oxidative reaction .so ans b.
correct me if i am wrong

 

[ddss87]

niacin , a constituent of nad and nadp involved only in redox reaction, not in oxidative reaction .so ans b.
correct me if i am wrong

redox stands for reduction-oxidation reactions. and yes, nad/nadp are involved in redox reactions. but so is fad/fmn

 

[aathmashree]

how does p/o ratio alter in mitochondria wen an uncoupler is used,/???

any 1 plz explain this answer

 

[godisgud]

In the devolpin spinal cord,the mantle layer of the basal plate develops into which of the followin adult structures?
Motor axons
sensory axons
motor neuron (Ans)
sensory neurons
I will b glad if smebody could explain this..Plz..
thanks

 

[anekha]

can anybody plz answer dis quedat wat comprises of outer layer of cell membrane?
hoshatidylcholine
phosphatidyl ethanolamine
sphingomyelin

 

[ddss87]

can anybody plz answer dis quedat wat comprises of outer layer of cell membrane?
hoshatidylcholine
phosphatidyl ethanolamine
sphingomyelin

cell membrane is composed of lipids (phospholipids, glycolipids and steroids), carbohydrates (glycoproteins but mostly glycolipids) and proteins.

phosphatidylcholine, phophatidyl ethanolamine and sphingomyelin and phospholipids. they r all present in the cell membrane.

 

[dr.internationa]

In the devolpin spinal cord,the mantle layer of the basal plate develops into which of the followin adult structures?
Motor axons
sensory axons
motor neuron (Ans)
sensory neurons
I will b glad if smebody could explain this..Plz..
thanks

spinal cord develops from the neural tube..
2 plates form. upper plate called roof plate and lower called basal plate.
roof plate develops sensory neurons and basal plate develops motor neurons..
hope this helps..

 

[godisgud]

thank you very much dr.internationa..
Can you explain this question..
Sympathetic stimulation affects carbohydrate metabolism becz
Epinephrine increases liver glycogenolysis
Peripheral tissues req epinep to take up glucose
Sympathetic nerves to the pancreas increase insulin release

 

[godisgud]

Somebody plz help me to answer this questions..

1)How does the body control fluoride levels?

2)What agent kills lipophilic and nonlipophic viruses?

3)Canine guidance

4)What is not in a serum sickness reaction?

5)Which premolar tilts the most lingually?

6)Afferent drainage to the bowman capsule?

7)which tooth is most resistant to caries?

thanks..

 

[godblessus]

Somebody plz help me to answer this questions..

1)How does the body control fluoride levels?

2)What agent kills lipophilic and nonlipophic viruses?

3)Canine guidance

4)What is not in a serum sickness reaction?

5)Which premolar tilts the most lingually?

6)Afferent drainage to the bowman capsule?

7)which tooth is most resistant to caries?

thanks..

Generally, enveloped (lipophilic) viruses are susceptible to alcohol: Herpes simplex virus (HSV), human immunodeficiency virus (HIV), influenza virus (Flu), respiratory syncytial virus (RSV), vaccinia virus, Hepatitis B and C viruses are considered susceptible to alcohols. However, certain nonenveloped (nonlipophilic) viruses such as hepatitis A and enteroviruses, which are both responsible for viral gastrointestinal infections. Depending on the alcohol concentration of the hand-cleanser and time of exposure to the alcohol, hepatitis A and other nonlipophilic viruses may not be eliminated.


http://microbiology.suite101.com/article.cfm/alcohol_based_hand_cleansers#ixzz0m7PZtE2w[/url]

 

[naureenm]

Hey u guys!! Anyone from toronto area wanna make a study group?? I will be giving the exam in feb2011
[email protected]

 

[elmos]

the maxillary canine is the most resistance to caries.
and the 1st inferior premolar is tilt lingualy
that's what i think

 

[Truth seeker]

the maxillary canine is the most resistance to caries.
and the 1st inferior premolar is tilt lingualy
that's what i think

hey elmos,
its mandibular canine ,most resistance to caries.
quoting you "and the 1st inferior premolar is tilt lingualy" , inferior?????
if u meant mandibular 1st pm , well all mandibular pm's are lingually inclined wrt their counterparts .

hope this helps !

 

[dontist]

i have a doubt....

isnt the prefunctional stage is when the dental lamina starts forming?

the answer given is shaded in yellow... none of the above

can anyone give explanation?

 

[dontist]

and one more please

i think the question is not properly framed ?? they should tell us adenohypophysis or neurohypophysis??? isnt it??

i mean for adenohypophysis ans can be 5 and for neuro it can be 3.

can anyone tell me??

the answer correct given is 5. if anyone can explain it how?

 

[lotus99]

i have a doubt....

isnt the prefunctional stage is when the dental lamina starts forming?

the answer given is shaded in yellow... none of the above

can anyone give explanation?

I found this explanation in an old thread on search

Histological phases of eruption:

1) Pre-eruptive phase:

It starts at the beginning of tooth development and ends when the crown formation is completed.

It is characterized by:

a) Growth of tooth germ i.e. dental (enamel) organ, dental papilla and dental sac.
b) Formation of bony crypt.
c) Movement of developing tooth within the growing jaw. Different types of movement occurs: bodily, axial, rotational and eccentric( i.e. shifting the long axis of the developing tooth). This eccentric movement is associated with differential growth.

2) Prefunctional ( Eruptive) phase:
It starts at the beginning of root formation and ends when the tooth reaches occlusion. It is characterized by:

a) Formation of the root.
b) Bone apposition especially at the fundus of the crypt.
c) Initial organization of periodontal ligament.
d) Rapid active eruption

3) Functional ( Posteruptive ) phase:
It starts when the erupting tooth reaches occlusion with its antagonists and lasts throughout the life of the tooth.

It is characterized by:

a) Occlusal active eruption (more cementum and alveolar bone apposition).
b) Occlusomesial physiological drift ( alveolar bone remodeling ).
c) Organization of periodontal ligament principal fibers.

Prefunctional eruptive stage is when roots begin formation....so answer is none of the above.Keep the questions going👍

 

[colours99]

The ant.pituitary ( Pars Distalis ) is made of
- basophils,
-acidophils and
-chromophobes.
-(and sinusoids)

Post.pituitary (pars nervosa) is made of
- neurophils (non myelinated axons of neurosecretory cells whose bodies are in the hypothalamus)
-pituicytes (supporting cells, neuro glial like cells)
-Herring bodies

I think the options are wrong may be they meant acidophils and basophils instead of alpha and beta cells.

and one more please

i think the question is not properly framed ?? they should tell us adenohypophysis or neurohypophysis??? isnt it??

i mean for adenohypophysis ans can be 5 and for neuro it can be 3.

can anyone tell me??

the answer correct given is 5. if anyone can explain it how?

 

[Doc17]

1.A drug has pk of 6.4. At a pH of 7.4,which f the following approx the ration of the unprotonated form to protonated form(D-/HD)?
a. 0
b. .1
c 1
d 10
ans is D

2.Solution A has pH of 7.0 and solution B has a phof 6.0.both r d equal volume ,which of the following statement abt solutions A n B is most accurate?
a. A has 1/10 as many H ions as B
b. A has 7/6 ..............................B
c. A has 10 times more .......B
d A has 6/7.................B
ans is A

Does anyone know how to solve this kind of questions?Im applying Henderson Hasselbach equations.........still cant get the ans........is their another way to solve or line to think?

plz reply.

 

[dontist]

development of body of mandible involves .....

1 intramembranous bone development
2 reichert's cartilage
3 complete cartilage model
4 all the above
5 noone.

i am confused in 1 and 3. can someone tell me correct ans....

 

[dontist]

btw thanks colors and lotus.. you guys are wonderful.. really appreciate your help...👍👍👍

 

[papu]

development of body of mandible involves .....

1 intramembranous bone development ans
2 reichert's cartilage
3 complete cartilage model
4 all the above
5 noone.

i am confused in 1 and 3. can someone tell me correct ans....

mandible formed from connective tissue such as mesenchyme tissue rather than from cartilage.

 

[dontist]

mandible formed from connective tissue such as mesenchyme tissue rather than from cartilage.

than what is the role of meckel's cartilage?

 

[papu]

than what is the role of meckel's cartilage?

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

 

[ddss87]

hey..can someone please tell me where i can read occlusion from?! i read it from wheeler's and kaplan but the questions asked in the released papers r really tough, especially the ones which ask which cusp passes through so and so groove during lateral movement..
please help!

 

[sunshine2011]

hi friends
i find few topics repeatedly confusing.
-these topics (metabolic acidosis ,alkalosi,resp acidosis n resp alkalosis)
am always making mistakes.whenever i study am fine,but when am answering i mark it wrong,can u pls tell me any pneumonic or any easy solution to remember these..
- do we have to learn abt g proteins.? am making those mistakes often..
pls tell me any easy way to remember
thnks a lot..exam in 10 days 🙁

 

[sunshine2011]

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

 

[godblessus]

1.A drug has pk of 6.4. At a pH of 7.4,which f the following approx the ration of the unprotonated form to protonated form(D-/HD)?
a. 0
b. .1
c 1
d 10
ans is D

2.Solution A has pH of 7.0 and solution B has a phof 6.0.both r d equal volume ,which of the following statement abt solutions A n B is most accurate?
a. A has 1/10 as many H ions as B
b. A has 7/6 ..............................B
c. A has 10 times more .......B
d A has 6/7.................B
ans is A

Does anyone know how to solve this kind of questions?Im applying Henderson Hasselbach equations.........still cant get the ans........is their another way to solve or line to think?

plz reply.

From llw:

Defination of Pka
Pka = -logK =-log(10-6.4)


As per the HENDERSON HASSELBACH EQUATION:
Ph=Pka+log[A]/[HA]
WHERE A IS Neutral form of drug and HA is the positively charged drug.

Ph-pka=log[A]/[HA]
10(7.4-6.4)=[A]/[HA]
10(1)=[A]/[HA]
so ratio of unprotonated to protonated form is 10.

 

[blissonearth]

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 ?