NBDE 1 questions

[saburi]

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Hi!! All
Wasnt sure of the answers for these following questions,pls help

1]which of the following nerves is located directly on the lateral surface of medial pterygoid muscle?
facial
lingual
massetric
buccal
auriculotemporal

2]sublingual caruncles are elevations that-
are located on both sides of lingual frenum.
are also called sublingual folds.
contain openings for all of the sublingual ducts.
are related to post. aspect of the sublingual glands.

3]touch receptors are most numerous per unit area in the mucosa of which of the following?
uvula
hard palate
tip of tongue
attached gingiva
labial vestibule

4]when a brief period of hysterical hyperventilation causes respitory alkalosis , tetany might be caused by a suden decrease in which of the following kinds of calcium ?

Total serum
Ionized Serum
Citrate Bound
Serum protein bound

5] Solution A has a pH of 7.0 and Solution B has a pH of 6.0.both solution are of equal vol. Which of the following Statements about Solution A and B is accurate?

A has 1/10 as many hydrogen ions as B
A has 10 times more hydrogens than B
A has 7/6 of the hydrogen ion conc. of B
A has 6.7 of the hydrogen ion conc. of B

 

[mrswinidm]

hi,
2. contain openings for all of the sublingual ducts
3. tip of the tongue
5. A has 10 times more hydrogens than B

 

[dr dent]

nerves are
auriculotemporal and massetric .

 

[quest_life]

4]when a brief period of hysterical hyperventilation causes respitory alkalosis , tetany might be caused by a suden decrease in which of the following kinds of calcium ?

Total serum
Ionized Serum
Citrate Bound
Serum protein bound[ans]

 

[saburi]

1. Which of the following organs secretes insulin- like grrowth factor 1 (IGF-1) and what stimulates this secretion :

a. Ant.Pituitary , increasing IGF-RH in the blood.
b. Ant.Pituitary , increasing GRH in the blood
c. Kidney , increasing growth Hormone in the blood.
d. Liver,increasing growth Hormone in the blood.
e. Liver, increasing TSH in the blood.

2. An analysis of an EKG shows P waves occuring in the ST segment.This would indicate ectopic beats originating in the

a. Atria
b. A-Vnode
c. Lower Portion of the Bundle of HIS
d. Upper Portion of the Bundle of HIS

3. A person who has a long history of anabolic steroid abuse but has rescently stopped is likely to exhibit each of the following characteristics EXCEPT one. which of the following is this EXCEPTION ?

a. Sterility.
b. Low FSH levels
c. Low testosterone levels
d. Decreased number if spermatids.

4. An action potential initiated at the midpoint along the length of an axon will

a. not propagate
b. propagate towards the soma
c. propagate towards the nerve ending
d. propagate towards both the soma and the nerve ending.

5. Which of the following statements BEST describe the stength of the cardiac muscle contraction ? it is

a. decreased when extracellular ca++ is increased.
b. increased when extracellular ca++ is increased.
c. mainly regulated by vagal impulses.
d. unaffected by extracellular ca++
e. mainly regulated by heart rate.

Thanks

 

[s m i l e 2007]

1. Which of the following organs secretes insulin- like grrowth factor 1 (IGF-1) and what stimulates this secretion :
d. Liver,increasing growth Hormone in the blood.


2. An analysis of an EKG shows P waves occuring in the ST segment.This would indicate ectopic beats originating in the
c. Lower Portion of the Bundle of HIS


3. A person who has a long history of anabolic steroid abuse but has rescently stopped is likely to exhibit each of the following characteristics EXCEPT one. which of the following is this EXCEPTION ?
b. Low FSH levels

4. An action potential initiated at the midpoint along the length of an axon will
d. propagate towards both the soma and the nerve ending.

5. Which of the following statements BEST describe the stength of the cardiac muscle contraction ? it is
b. increased when extracellular ca++ is increased.
.Thanks

correct me if I am wrong

 

[reni]

nerves are
auriculotemporal and massetric .

hi nerves lateral to medial pterygoid muscle are lingual nerve, inf alv nerve and nerve to mylohyoid......so the ans is lingual nerve as it is the only one in options....
http://mywebpages.comcast.net/wnor/lesson4.htm
please go through it

 

[wessto]

hi,
2. contain openings for all of the sublingual ducts
3. tip of the tongue
5. A has 10 times more hydrogens than B

Actually, B has 10 times more than A since lower pH = higher [H+] I believe the correct answer is 1/10

Hope this helps.

 

[NBDE Part1]

yeah...even i think A has [H] 1/10 times than B.
also...the action potential will always propagate towards the nerve endings no natter where the nerve is stimulated...it shows propagation towards the soma only in vitro..!

 

[saburi]

1 Infection with Histoplasma capsulatum in normal, healthy individuals is usually a👎
a. dermatomycosis
b. opportunistic infection
c. rapidly spreading disease
d. self-limiting, benign disease
e. disease localized in the blood
is it B or D

2.Each of the following statements about lymphocyte activation is correct EXCEPT one. Which one is the EXCEPTION ?
a. Interleukin 5 is a D cell growth and differentiation factor
b. Interleukin 2 stimulates proliferation of T and B lymphocytes
c. B lymphocytes recognize antigen on the surface of antigen-presenting cells in the context of HLA-D molecules
d. T lymphocytes recognize antigen on the surface of antigen-presenting cells in the context of HLA-B molecules
i think the ans is A

3.Which of the following describes an example of innate immunity ?
a. An allergic reaction to insect venom
b. The classical pathway of complement
c. The destruction of virus-infected cells by T-killer cells
d. The production lgG in response to insect venom
e. The alternative pathway of complement

i think it E .becoz altenative pahtway is not antibody dependent.am i correct?



4. The epidemic of HIV-related disease bears major responsibility for the resurgence of which respiratory pathogen ?
a. Streptococcus pneumoniae
b. Hemophilus influenzae
c. Streptococcus pyogenes
d. Mycobacterium tuberculosis
e. Mycoplasma pneumoniae