Exam 3 Review Questions Flashcards
The optic nerve is a bundle of axon that originates from which of the following cell types?
Ganglion cells
Photosensitive pigments are associated with which of the following segments of a photosensitive cell?
Outer segment
Area of the highest visual acuity?
Fovea centralis
The lamina cribrosa is associated with which of the following layers of the eye?
Sclera
A stratified squamous, nonkeratinized epithelium with free nerve endings is characteristic of which of the following?
Corneal epithelium
The sensory layer of the ciliary body produces aqueous humor. This fluid is first secreted into which of the following chambers?
Posterior chamber
Which of the following structures participates in the fofrmation of endolymph in the scala media?
Stria vascularis
Endolymph is found in which of the following structures?
Ampullae of the semicircular canals
Which of the following structures attaches to the membrane over the oval window?
Stapes
The helicotrema connects which two compartments?
Scala vestibuli and scala tympani
Calcium carbonate crystals, known as otoliths, are found associated with which of the following 2 structures?
Macula of the utricle and saccule
The non-photosensitive area of the retina lies anterior to which of the following landmarks?
Ora serrata
Cell bodies of bipolar cells, horizontal cells, amacrine cells, and Mueller cells form which of the following layers of the retina?
Inner nuclear layer
Which of the following types of cells serve as interneurons that interconnect ganglion cells and bipolar cells?
Amacrine cells
Which of the following characteristics would apply to the secondary lymphoid nodules but not primary lymphoid nodules?
Germinal center
HIV selectively binds to CD4 antigens. Which of the following types of lymphocytes would be most directly affected by this virus?
Helper T cells
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?
Active, acquired
Which of the following is the first type of antibody expressed by developing B cells?
IgM
Which of the following cell types releases tumor necrosis factor, which is directly capable of killing tumor cells?
CD16+
Which of the following structures serves as the entry point by which circulating lymphocytes seed the lymph node?
High endothelial venules HEVs
Double-negative T cells which lack both CD4 and CD8 receptors proliferate in what area of the thymus?
Subscapsular
Hassall’s corpuscles are characteristic only of which of the following areas?
Medulla of thymus
Cords of Billroth are associated with what?
Red pulp of spleen
The flow of red blood cells through the spleen?
Splenic artery, trabecular arteries, central arteries, penicillus, venous sinuses
