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Flashcards in Histo Test Q's Deck (18):
1

Bipolar cells of the retina are located in which layer?
A. layer of ganglion cells
B. Outer plexiform layer
C. outer nuclear layer
D. inner nuclear layer
E. inner plexiform layer

D. inner nuclear layer

2

The tectoral membrane in the organ of corti is attached to which of the following?
A. Osseous spiral lamina
B. phalangeal cells
C. modiolus
D. spiral limbus
E. basilar membrane

A. Osseous spiral lamina

3

Which of the following is/are TRUE concerning the ear?
A. The endolymphatic duct interconnects the utricle and saccule and empties into the subarachnoid layer.
B. The modiolus is located on the lateral part of the cochlea.
C. The stria vascularis is located on the outer wall of the cochlear duct.
D. The vestibular membrane separates scala media from scala tympani.
E. None of the above.

C. The stria vascularis is located on the outer wall of the cochlear duct.

4

The endolymphatic duct extends from the subdural space to the:
A. utricle
B. vestibule
C. cochlea
D. saccule
E. A & D

E. A & D

5

All of the following are TRUE EXCEPT:
A. The tectorial membrane attaches to the spiral limbus
B. The stria vscularis produces perilymph
C. Efferent fibers synapsing onto the hair cells in the organ of corti are inhibitory to the hair cells
D. The vestibular membrane separates the scala vestibuli from the scale tympani
E. The bony spiral lamina projects into the cochlea from the modiolus.

B. The stria vscularis produces perilymph

6

The smooth muscle cells in the cilliary body function to:
A. increase tension on the zonules
B. Constrict the pupil
C. decrease tension on the zonules
D. decrease the production of aqueous humor
E. dilate the pupil

C. decrease tension on the zonules

7

The limbus is the:
A. Point of origin of the optic nerve
B. Point on the retina where images are focused
C. point where the "sensory" part of the retina is replaced by a single layer of non-pigmented cells.
D. Corneal-Scleral junction
E. name of the middle layer of the wall of the eye

D. Corneal-Scleral junction

8

Retinal detachment normally occurs between the:
A. inner and outer nuclear layers
B. sensory layer and pigmented layers of the retina
C. Bruch's membrane and Descemet's membrane
D. Optic disc and the pigmented layer of the retina
E. retina and the choroid

B. sensory layer and pigmented layers of the retina

9

The cell bodies of the bipolar cells are located in which of the following layers?
A. inner nuclear
B. Ganglionic cell
C. Inner plexiform
D. Outer nuclear
E. Outer plexiform

A. inner nuclear

10

Ciliary muscle contraction:
A. is under voluntary control
B. pulls the ciliary body forward and in
C. is needed to focus on distant objects
D. prevents accommodation
E. none of the above

B. pulls the ciliary body forward and in

11

The pigmented epithelium of the retina:
A. is attached to Bruch's membrane
B. continues anteriorly to the ciliary body and iris
C. is derived from the outer wall of the optic cup
D. phagocytoses vesicles shed by the rods
E. all of the above

E. all of the above

12

The border between the anterior and posterior chambers of the eye is/are the:
A. iris
B. lens
C. zonules
D. ora serrata
E. ciliary processes

A. iris

13

The utricle and the saccule are interconnected by the:
A. perilymphatic duct
B. scala media
C. endolymphatic duct
D. ductus reuniens
E. stria vascularis

C. endolymphatic duct

14

The spiral ganglion of the inner ear is located in the:
A. osseus spiral lamina
B. organ of corti
C. Spiral limbus
D. modiolus
E. helicotrema

D. modiolus

15

The optic nerve consists of fibers originating from the:
A. ganglion cells
B. bipolar cells
C. muller cells
D. amacrine cells
E. rods and cones

A. ganglion cells

16

Contraction of the muscles of the ciliary body:
A. increases the tension on the zonules
B. causes a thickening of the cornea
C. causes convergence of the eyes
D. decreases the size of the pupil
E. increases the convexity of the lens

E. increases the convexity of the lens

17

Which of the following represents the correct order of retinal layers that light passes before impinging on the pigmented layer?
A. outer plexiform layer-inner nuclear layer-outer nuclear layer
B. ganglionic cell layer-inner plexiform layer-inner nuclear layer
C. inner nuclear layer-inner plexiform layer-photoreceptors
D. inner limiting membrane-outer plexiform layer-inner nuclear layer
E. outer limiting membrane-inner plexiform layer-outer nuclear layer

B. ganglionic cell layer-inner plexiform layer-inner nuclear layer

18

The so-called "blind spot" of the eye refers to the:
A. limbus
B. fovea contralis
C. ora serrata
D. optic disk (papilla)
E. descemet's membrane

D. optic disk (papilla)