10. The retinal optic nerve fibre layer contains the axons of neurons:
A
– amacrine; B – ganglion; C – bipolar; D – horizontal; E – photoreceptor.
11. The optic nerve is composed of:
A
– photoreceptor dendrites; B – bipolar cell axons; C – amacrine cell dendrites; D –
ganglion cell axons; E
– horizontal cell axons.
12. The retinal external and internal limiting membranes are formed by the
processes of:
A
– glial cells; B – photoreceptors; C – amacrine cells; D – ganglion cells; E – horizontal
cells.
13. Each of the following statements concerning the pigmented epithelium is true,
EXCEPT:
A
– consists of columnar cells; B – its cells have processes investing the outer segments
of photoreceptors; C
– contains melanin granules; D – contains the photosensitive
pigment; E
– is the outermost retinal layer.
14. Each of the following statements concerning the pigmented epithelium functions
is true, EXCEPT:
A
– transports vitamin A and nutrients from the choroid; B – phagocytoses shed tips of
rods and cones; C
– absorbs light; D – takes part in light adaptation; E – transmits nervous
impulses.
15. Each of the following statements concerning the olfactory cells is true, EXCEPT:
A
– are bipolar neurons; B – their dendrites are characterized by bulbous projections; C –
the cilia extend from their olfactory knobs; D
– they are mechanoreceptors; E – their
unmyelinated axons are gathered into the fila olfactoria.
Directions
: one or more of the given statements or completions is/are correct. Choose the
answer: A
– if only 1,2, and 3 are correct; B – if only 1 and 3 are correct; C – if only 2 and
4 are correct; D
– if only 4 is correct; E – if all are correct.
16. The following statements regarding the sclera are true:
(1) consists of dense connective tissue (2) maintains the eye shape (3) serves as the
attachment site for oculomotor muscles (4) is transparent
17. The following statements regarding the aqueous humor are true:
(1) is produced by ciliary processes (2) flows from the posterior eye chamber into the
anterior eye chamber (3) outflows via the canal of Schlemm into the eye venous system
(4) is related to glaucoma
18. The following statements regarding the eye limbus are true:
(1) contains the canal of Schlemm (2) is corneal-scleral junction (3) its blood vessels
provide corneal nutrition (4) contains muscles of accommodation
19. The following statements regarding the choroid are true:
(1) consists of loose connective tissue (2) is highly vascular (3) contains numerous
melanocytes (4) absorbs light
20. The following statements regarding the lens are true:
(1) is an epithelial structure (2) possesses its own capsule (3) consists of transparent
fibres (4) is biconvex
21. The following statements regarding the vitreous body are true:
(1) is refractile gel (2) contains few hyalocytes (3) is composed of water, collagen, and
hyaluronic acid (4) takes part in accommodation
22. The following statements regarding the photoreceptors are true:
(1) their inner segments are cell metabolic centres (2) their tips are shed and
phagocytosed (3) their outer segments face the back of the eye (4) their axons synapse
with horizontal cells and bipolar neurons
23. The following neurons of the retina constitute the initial link of the optic tract:
(1) photoreceptors (2) bipolar cells (3) ganglion cells (4) amacrine cells