First 30 Q's Flashcards
15 Anderson 15 New
1
Q
Endolymph is found in which of the following structures? A. Ampullae of the semicircular canals B. Scala Vestibuli C. Scala tympani D. Middle ear chamber
A
A. Ampullae of the semicircular canals.
2
Q
Which of the following structures participates in the formation of endolymph? A. Tectorial membrane B. Stria vascularis C. Subarachnoid space D. Subdural space
A
B. Stria vascularis
3
Q
Which of the following structures attaches to the membrane over the oval window? A. Malleus B. Incus C. Stapes D. None of the above
A
C. Stapes
4
Q
The helicotrema connects which of the two compartments listed below?
A. Middle ear chamber and the scala media
B. Scala vestibuli and scala tympani
C. Scala tympani and the cochlear duct
D. Round window and the cochlear duct
A
B. Scala Vestibuli and scala tympani
5
Q
Calcium carbonate crystals, known as otoliths, are found associated with which of the following structures?
A. Scala tympani
B. Cristae ampulares of the semicircular canals
C. Macula of the utricle and saccule
D. Cochlear duct
A
C. Macula of the utricle and saccule
6
Q
Which of the following characteristics would apply to secondary lymphoid nodules but not primary lymphoid nodules? A. Afferent lymphatics B. Afferent veins C. Germinal center D. High-endothelial veins (HEV's)
A
C. Germinal Center
7
Q
The human immunodeficiency virus selectively binds to CD4 antigens. Which of the following types of lymphocytes would be most directly affected by this virus? A. Cytolytic T cells B. Helper T cells C. Natural killer cells D. Macrophages
A
B. Helper T cells
8
Q
Which of the following complement factors is the most important opsonin? A. C2b B. C3b C. C4b D. C5b
A
B. C3b
9
Q
If a child is exposed to measles and comes down with the infection, which of the following terms describes the type of immunity the child will develop? A. Passive, innate B. Active, innate C. Passive, Acquired D. Active, Acquired
A
D. Active, acquired
10
Q
Which of the following is the first type of antibody expressed by developing B cells? A. IgA B. IgG C. IgM D. IgD E. IgE
A
C. IgM
11
Q
Which of the following cell types releases tumor necrosis factor, which is directly capable of killing tumor cells? A. CD4+ B. Cd8+ C. CD16+ D. Neutrophils E. CD62+
A
C. CD16+
12
Q
Which of the following structures serves as the entry point by which circulating lymphocytes seed the lymph node? A. Afferent lymphatics B. Efferent lymphatics C. High endothelial venules D. Subcapsular space
A
C. High endothelial venules
13
Q
Double-negative T cells which lack both CD4 and CD8 receptors proliferate in which of the following areas of the thymus? A. Subcapsular B. Outer Cortex C. Inner Cortex D. Medulla
A
A. Subcapsular
14
Q
Hassall's corpuscles are characteristic only of which of the following areas? A. Cortex of lymph nodes B. Medulla of lymph nodes C. Cortex of thymus D. Medulla of thymus
A
D. Medulla of thymus
15
Q
Cords of Billroth are associated with which of the following? A. Cortex of lymph nodes B. Cortex of thymus C. White pulp of spleen D. Red pulp of spleen
A
D. Red pulp of spleen
