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Histology > EYES > Flashcards

EYES Flashcards

1
Q

Embryonic origin of sclera

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

A

Mesoderm

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2
Q

Embryonic origin of Sphincter pupillae

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

A

Neural ectoderm

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3
Q

Where is the region associated with maximum visual acuity?

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

A

Fovea Centralis

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4
Q

Which layer of the cornea is acellular?

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

A

Descemet’s membrane

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5
Q

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

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

A

Stratified squamous

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6
Q

It refers to the suspensory ligament of the lens?

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

A

Zonular fibers

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7
Q

What is the anterior pigmented portion of the retina called?

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

A

Ora serrata

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8
Q

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

A

Apocrine sweat glands

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9
Q

What is the vascular pigmented structure?

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

A

Choroid

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10
Q

Which of these function for color perception?

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

A

Cones

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11
Q

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

A

Cornea

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12
Q

Which layer forms the majority of the cornea?

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

A

Substantia propria/corneal stroma

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13
Q

Which layer of the cornea is acellular?

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

A

Bowman’s membrane

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14
Q

What makes up the bulk of the cornea?

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

A

Collagen fibers

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15
Q

What structure is avascular?

A. Sclera
B. Retina
C. Cornea

A

Cornea

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16
Q

What is the most anterior portion of the uvea?

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

A

Iris

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17
Q

What is responsible for adjusting the lens?

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

A

Ciliary muscle

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18
Q

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

A

Loose connective tissue

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19
Q

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

A

Ganglion cells

20
Q

Which layer forms the majority of the cornea?

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

A

Stroma

21
Q

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

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

A

Pigmented epithelium

22
Q

Chief refractive element

A

Cornea

23
Q

Suspended by zonules of Zinn

A

Lens

24
Q

Acts as shock absorber

A

Vitreous body

25
Q

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

A

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

26
Q

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

A

Corneal endothelium

27
Q

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

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

A

Stratified squamous

28
Q

Maintains shape of the eye

A

Vitreous body

29
Q

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

A

Vitreous body

30
Q

Able to regenerate

A

Descemet’s membrane

31
Q

What is Bruch’s membrane?

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

A

Laminate vitrea

32
Q

What are neurons in the retina?

a. Unipolar
b. Pseudounipolar
c. Bipolar
d. Multipolar
e. Both a and b

A

Bipolar

33
Q

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

A

Optic disc

34
Q

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

A

Anterior chamber

35
Q

What are the receptors for vision?

a. Rods
b. Cones
c. Bipolar cells
d. Ganglion cells
e. Both a and b

A

Rods and cones

36
Q

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

A

Lamina cribrosa

37
Q

Which of the following is NOT part of the retina?

a. Receptor cells
b. Neurons
c. Pigmented epithelium
d. Ciliary body
e. Supporting cells

A

Ciliary body

38
Q

What is the inner layer of the choroid?

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

A

Lamina vitrae

39
Q

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

A

Canal of Schlemm

40
Q

How many layers of tissue compose the eyeball?

a. 1
b. 2
c. 3
d. 4
e. 5

A

3

41
Q

Which structure is part the uvea?

a. Ora serrata
b. Pigmented epithelium
c. Cornea
d. Sclera
e. Ciliary body

A

Ciliary body

42
Q

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

A

Anterior and posterior chamber

43
Q

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

A

Henle’s layer

44
Q

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

A

Vitreal cavity

45
Q

Where on the retina are there no photoreceptors?

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

A

Optic disc

46
Q

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

A

Posterior chamber

Histology (7 decks)

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