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Instructions: For each histology question, pick the one best answer. This histology test bank is also useful for the histology questions on the USMLE (USMLE step 1). Click here for answers and detailed explanations.
1.
What are the receptors for vision?
a. Rods
b. Cones
c. Bipolar cells
d. Ganglion cells
e. Both a and b
2.
Where is the ciliary muscle located?
a. Ciliary body
b. Optic disc
c. Fovea centralis
d. Lamina vitrea
e. Lamina cribrosa
3.
Where is the ciliary muscle located?
a. Choroid
b. Ciliary body
c. Iris
d. Ora serrata
e. Sclera
4.
What are the openings within the sclera which allow nerve fibers to exit?
a. Os
b. Optic chiasm
c. Lamina cribrosa
d. Optic disc
e. Ora serrata
5.
Which of the following is NOT part of the retina?
a. Receptor cells
b. Neurons
c. Pigmented epithelium
d. Ciliary body
e. Supporting cells
6.
What structure adjusts the shape of the lens?
a. Internal oblique muscle
b. Orbicularis oculi
c. Tarsus
d. Ciliary muscle
e. Levator muscle
7.
What is the inner layer of the choroid?
a. Ciliary body
b. Optic disc
c. Fovea centralis
d. Lamina vitrea
e. Lamina cribrosa
8.
Where does aqueous humor from anterior chamber collect into?
a. Canaliculi
b. Canal of Hering
c. Canal of Muller
d. Canal of Descemet
e. Canal of Schlemm
9.
Which layer of the cornea is acellular?
a. Epithelium
b. Endothelium
c. Descemet's membrane
d. Substantia propria
e. None of the above
10.
Which structure is avascular?
a. Retina
b. Cornea
c. Choroid
d. Sclera
e. Uvea
Click here for answers and detailed explanations.
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