Histology - Microanatomy of the eye

Question 1

which component of the eyelid lies closest to the skin

a.orbicularis muscle
b.conjunctiva
c.accessory lacrimal glands
d. meibomian glands
e.tarsal plate

Answer 1

a.orbicularis muscle

Question 2

which part of the eyelid produces lipid rich secretions that prevent tears from evaporating

a.orbicularis muscle
b.conjunctiva
c.accessory lacrimal glands
d. meibomian glands
e.tarsal plate

Answer 2

d. meibomian glands

Question 3

which part of the eyelid is made up of dense fibroelastic tissue

a.orbicularis muscle
b.conjunctiva
c.accessory lacrimal glands
d. meibomian glands
e.tarsal plate

Answer 3

e.tarsal plate

Question 4

what is the correct order of the layers of the eyeball from outer to inner

a.sclera and cornea , retina, uvea
b.uvea, retina, sclera and cornea
c. sclera and cornea, uvea, retina

Answer 4

c. sclera and cornea, uvea, retina

Question 5

the choroid, cilliary body and what other structure make up the uvea

a.cornea
b.iris
c.sclera
d.retina

Answer 5

b.iris

Question 6

which of these is a tough dense CT

a.sclera
b.cornea
c.iris

Answer 6

a.sclera

Question 7

the limbus is the boundary between the sclera and the

a.cilliary body
b.choroid
c. cornea
d.iris
e.pupil

Answer 7

c. cornea

Question 8

damage to which layer of the cornea causes scar formation and loss of visual acuity

a.epithelium
b.stroma
c.bowmans layer
d. descemets membrane

Answer 8

c.bowmans layer

Question 9

the cornea is transparent due to the arrangement of what into aligned lamellae and the affinity of the matrix for water

a.keratin
b.collagen
c.fibrin

Answer 9

b.collagen

Question 10

how many layers does the cornea have

a.3
b.4
d.5
e.6

Answer 10

d.5

ssnk epithelium
bowmans layer
stroma
descemets membrane
corneal endothelium

Question 11

which layer of the eye is the vascular layer

a.sclera
b.cornea
c.uvea
d.retina

Answer 11

c.uvea

Question 12

which portion of the uvea contains the cilliary body and dilator and constrictor portion of the iris

a. anterior
b.posterior

Answer 12

a. anterior

Question 13

the cilliary body muscle regulates the ………….. of the lens

a.size
b.volume
d.tension

Answer 13

d.tension

Question 14

what produces the aqueous humour

a.epithelium of cilliary processes
b.ssnk of cornea
c.endothelium of cilliary processes
d.accessory lacrimal glands
e.meibomian gland

Answer 14

a.epithelium of cilliary processes

Question 15

contraction of cilliary muscles causes ………….. of the lens

a.contraction
b.relaxation

Answer 15

b.relaxation

Question 16

what separates the anterior and posterior chambers of the eyes

a. cornea
b.sclera
c.cilliary bodies
d.iris

Answer 16

d.iris

Question 17

number of what determine eye colour

a.melanocytes in the anterior limiting layer
b.melanocytes in the stromal layer
c.fibroblasts in the anterior limiting layer

Answer 17

b.melanocytes in the stromal layer

Question 18

few melanocytes in the stromal layer of the iris gives which eye colour

a.blue
b.green
c.brown

Answer 18

a.blue

Question 19

the retina has how many layers

a.1
b.2
c.3
d.4

Answer 19

b.2

outer pigmented and inner retinal

Question 20

what seperates the anterior 1/3 and posterior 2/3 of the retina

a.limbus
b.choroid
c.ora serrata

Answer 20

c.ora serrata

Question 21

which part of the retina is light sensitive and contains photoreceptor neurons (rods and cones)

a.posterior 2/3
b.anterior 1/3

Answer 21

a.posterior 2/3

Question 22

which part of the retina is not light sensitive

a.anterior 1/3
b. posterior 2/3

Answer 22

a.anterior 1/3

Question 23

the inner retinal layer of the retina is made up of how many layers of different cell types

a.5
b.6
c.7
d.8
e.9

Answer 23

e.9

contains the rods and cones

Question 24

4 groups of cells found in the sensory retina

Answer 24

photoreceptor neurons
conducting neurons
association neurons
neuroglial cells

Question 25

bipolar and ganglion cells are examples of which cell type found in the retina

a.photoreceptor
b.conducting
c.association
d.neuroglial

Answer 25

b.conducting

Question 26

horizontal and amacrine cells are examples of which cell type found in the retina

a.photoreceptor
b.conducting
c.association
d.neuroglial

Answer 26

c.association

Question 27

muller cells are examples of which cell type found in the retina

a.photoreceptor
b.conducting
c.association
d.neuroglial

Answer 27

d.neuroglial

Question 28

which photoreceptor neurons perceive light intensity

a.rods
b.cones

Answer 28

a.rods

Question 29

which photoreceptor neurons perceive colour

a.rods
b.cones

Answer 29

b.cones

Question 30

which cell type are concentrated at the fovea

a.cones
b.rods

Answer 30

a.cones

Question 31

which cell type are concentrated at the periphery of the retina

a.cones
b.rods

Answer 31

b.rods

Question 32

at the fovea cones are arranged at an angle and ……… layers of retina do not obstruct the light pathway

a.inner
b.outer pigmented

Answer 32

a.inner

Question 33

the fovea is found within the …….

a.macula
b.macula densa
c.optic disc
d.retina

Answer 33

a.macula

Question 34

at which location do axons from ganglion cells merge to form the optic nerve giving a blind spot due to lack of photoreceptors

a.retina
b.macula
c.fovea
d.optic disc

Answer 34

d.optic disc

Question 35

glaucoma

Answer 35

rise in intraocular pressure

Question 36

glaucoma

Answer 36

rise in intraocular pressure

blockage of drainage of aqueous humour through the meshwork of the eye leads to glaucoma , damage to the retina and blindness

Question 37

the lens of the eye has an outer layer of which type of collagen

a. I
B.ii
C.III
D.IV
V

Answer 37

D.IV