EYES

Question 1

Embryonic origin of sclera

b. Surface Ectoderm
c. Neural endoderm
d. Neural Ectoderm
e. Mesoderm

Answer 1

Mesoderm

Question 2

Embryonic origin of Sphincter pupillae

f. Surface Ectoderm
g. Neural endoderm
h. Neural Ectoderm
i. Mesoderm

Answer 2

Neural ectoderm

Question 3

Where is the region associated with maximum visual acuity?

a. Lamina vitrea
b. Optic disc
c. Cilliary body
d. Lamina cribrosa
e. Fovea centralis

Answer 3

Fovea Centralis

Question 4

Which layer of the cornea is acellular?

a. Endothelium
b. Epithelium
c. Substantia propria
d. Descemet’s membrane

Answer 4

Descemet’s membrane

Question 5

What type of epithelium is on the surface of the cornea?

a. Simple squamous
b. Simple columnar
c. Simple cuboidal
d. Stratified squamous

Answer 5

Stratified squamous

Question 6

It refers to the suspensory ligament of the lens?

a. Zonular fibers
b. Collagen fibers
c. Spiral ligament
d. Elastic fibers

Answer 6

Zonular fibers

Question 7

What is the anterior pigmented portion of the retina called?

a. Choroid
b. Ciliary body
c. Iris
d. Ora serrata
e. Sclera

Answer 7

Ora serrata

Question 8

What type of glands are the glands of Moll?

a. Endocrine gland
b. Apocrine sweat gland
c. Oil gland
d. Sebaceous glands
e. Eccrine sweat gland

Answer 8

Apocrine sweat glands

Question 9

What is the vascular pigmented structure?

a. Choroid
b. Ciliary body
c. Iris
d. Ora serrata
e. Lens

Answer 9

Choroid

Question 10

Which of these function for color perception?

a. Ganglion cells
b. Horizontal cells
c. Bipolar cells
d. Rods
e. Cones

Answer 10

Cones

Question 11

Which structure is transparent?
a. Choroid
b. Ciliary body
c. Iris
d. Ora serrata
e. Cornea

Answer 11

Cornea

Question 12

Which layer forms the majority of the cornea?

a. Epithelium
b. Endothelium
c. Descemet’s membrane
d. Substantia propria
e. Bowman’s membrane

Answer 12

Substantia propria/corneal stroma

Question 13

Which layer of the cornea is acellular?

a. Epithelium
b. Endothelium
c. Bowman’s membrane
d. Substantia propria
e. None of the above

Answer 13

Bowman’s membrane

Question 14

What makes up the bulk of the cornea?

a. Purkinje fibers
b. Myofibrils
c. Elastic fibers
d.Collagen fibers

Answer 14

Collagen fibers

Question 15

What structure is avascular?

A. Sclera
B. Retina
C. Cornea

Answer 15

Cornea

Question 16

What is the most anterior portion of the uvea?

a. Choroid
b. Ciliary body
c. Iris
d. Ora serrata
e. Sclera

Answer 16

Iris

Question 17

What is responsible for adjusting the lens?

a. Choroid
b. Ciliary muscle
c. Iris
d. Ora serrata
e. Sclera

Answer 17

Ciliary muscle

Question 18

The iris is composed of several tissue types. Most of the visible portion is composed of:

a. Nervous tissue
b. Dense fibrous connective tissue
c. Loose connective tissue
d. Epithelial tissue

Answer 18

Loose connective tissue

Question 19

Which of the following is a type of neuron found in the inner coat of the eye:

a. Cones
b. Ganglion cells
c. Rods
d. Pigmented epithelium

Answer 19

Ganglion cells

Question 20

Which layer forms the majority of the cornea?

a. Bowman’s membrane
b. Stroma
c. Endothelium
d. Epithelium
e. Descemet’s membrane

Answer 20

Stroma

Question 21

The cells which secrete aqueous humor represent and extension of which layer:

a. Corneal endothelium
b. Corneal epithelium
c. Pigmented epithelium
d. Stroma

Answer 21

Pigmented epithelium

Question 22

Chief refractive element

Answer 22

Cornea

Question 23

Suspended by zonules of Zinn

Answer 23

Lens

Question 24

Acts as shock absorber

Answer 24

Vitreous body

Question 25

Which of the following is false about the lens? a. It is avascular b. It is transparent and biconvex c. The lens capsule is composed of type IV collagen, elastin, and proteins

Answer 25

The lens capsule is composed of type IV collagen, elastin, and proteins

Question 26

The layer of cuboidal cells which forms the innermost surface of the cornea is called: a. Corneal endothelium b. Decemet’s membrane c. Pigmented membrane d. Corneal epithelium e. Stroma

Answer 26

Corneal endothelium

Question 27

What type of epithelium is on the surface of the cornea? a. Simple squamous b. Simple columnar c. Simple cuboidal d. Stratified squamous

Answer 27

Stratified squamous

Question 28

Maintains shape of the eye

Answer 28

Vitreous body

Question 29

It is made up of a transparent gel and consists mainly of water. a. Cornea b. Lens c. Aqueous humor d. vitreous body e. optic disc

Answer 29

Vitreous body

Question 30

Able to regenerate

Answer 30

Descemet's membrane

Question 31

What is Bruch's membrane? a. Ciliary body b. Optic disc c. Fovea centralis d. Lamina vitrea e. Lamina cribrosa

Answer 31

Laminate vitrea

Question 32

What are neurons in the retina? a. Unipolar b. Pseudounipolar c. Bipolar d. Multipolar e. Both a and b

Answer 32

Bipolar

Question 33

What is the region called where the optic nerve exits the eye? a. Os b. Optic chiasm c. Lamina cribrosa d. Optic disc e. Ora serrata

Answer 33

Optic disc

Question 34

What is the space anterior to the iris? a. Anterior chamber b. Posterior chamber c. Vitreal cavity d. Both a and b e. All of a, b, and c

Answer 34

Anterior chamber

Question 35

What are the receptors for vision? a. Rods b. Cones c. Bipolar cells d. Ganglion cells e. Both a and b

Answer 35

Rods and cones

Question 36

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

Answer 36

Lamina cribrosa

Question 37

Which of the following is NOT part of the retina? a. Receptor cells b. Neurons c. Pigmented epithelium d. Ciliary body e. Supporting cells

Answer 37

Ciliary body

Question 38

What is the inner layer of the choroid? a. Ciliary body b. Optic disc c. Fovea centralis d. Lamina vitrea e. Lamina cribrosa

Answer 38

Lamina vitrae

Question 39

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

Answer 39

Canal of Schlemm

Question 40

How many layers of tissue compose the eyeball? a. 1 b. 2 c. 3 d. 4 e. 5

Answer 40

3

Question 41

Which structure is part the uvea? a. Ora serrata b. Pigmented epithelium c. Cornea d. Sclera e. Ciliary body

Answer 41

Ciliary body

Question 42

What is the space anterior to the lens? a. Anterior chamber b. Posterior chamber c. Vitreal cavity d. Both a and b e. All of a, b, and c

Answer 42

Anterior and posterior chamber

Question 43

Which one of the following is not found in the retina? a. Henle's layer b. Bipolar cells c. Amacrine cells d. Rods e. Ganglion cells

Answer 43

Henle's layer

Question 44

What is the space posterior to the lens? a. Anterior chamber b. Posterior chamber c. Vitreal cavity d. Both a and b e. All of a, b, and c

Answer 44

Vitreal cavity

Question 45

Where on the retina are there no photoreceptors? a. Ciliary body b. Optic disc c. Fovea centralis d. Lamina vitrea e. Lamina cribrosa

Answer 45

Optic disc

Question 46

What is the space posterior to the iris? a. Anterior chamber b. Posterior chamber c. Vitreal cavity d. Both a and b e. All of a, b, and c

Answer 46

Posterior chamber