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block

Mark the CORRECT statement with respect to the anterior ciliary arteries:

Select the correct answer(s).  

(0/0)

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The supply the medial choroid

The supply the lacrimal gland

They supply the sclera and the conjunctiva

The supply the posterior sclera

The supply the anterior retina

none

Which of the following is a function of the choroid?

Select the correct answer(s).  

(0/0)

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To assist the regulation of the intraocular pressure

To increase the heat in the eyeball

To absorb the excess light that penetrates the retina

To conuct blood vessels forward to the anterior layers of the eye

none

Match the correct pairs regarding the conjunctiva

Match the text (click and drag)   

(0/0)

Check Order Of Answers

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Match the text
Conjunctival epithelium contains
Conjunctival submucosa contains
Plica semilunaris
Caruncule

Click and drag
is a crescent shaped fold of conjunctiva at the medial canthus
globlet cells which produce the mucous component of the tear film
is a mound of tissue that overlies
loose vascularised tissue, deeper parts contain accessory lacrimal glands

Check Order of Answers

none

Which of the following statements about Bruch's embrane is CORRECT:

Select the correct answer(s).  

(0/0)

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It has 5 well defined layers

It is 2-4mm thick

it is absent in the fovea

Iti is a layer composed of small choriocapillary vessels

It corresponds to the basement membrane of the retinal pigment epithelium

none

The lacrimal gland is:

Select the correct answer(s).  

(0/0)

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Located in a fossa on the temporal side of the orbital plate of the frontal bone

Divided into an orbital portion and temporal portion

Only involved in the basic secretion of tears

Divided into two portions by the aponeurosis of the orbicularis muscle

Composed of numerous acini that secrete mucine

none

Contraction of the inferior rectus muscle causes:

Select the correct answer(s).  

(0/0)

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Primarily adduction and secondarily depression and extortion

Primarily depression and secondarily adduction and extortion

Primarily elevation and secondarily adduction and extortion

Primarily depression and secondarily extortion and abduction

Primarily depression and secondarily intortion and adduction

none

Enumerate the 10 layers of the retina

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Check Order Of Answers

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Match the Text
1
2
3
4
5
6
7
8
9
10

Click and drag
Photoreceptor Layer
Internal Limiting membrane
Inner Plexiform Layer
Ganglion Cell Layer
External Limiting Membrane
Outer Plexiform Layer
Inner Nuclear Layer
Nerve Fibre Layer
Retinal Pigment Epithelium
Outer Nuclear Layer

Check Order of Answers

none

The palpebral conjunctiva (mark the CORRECT statement:

Select the correct answer(s).  

(0/0)

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Is translucent with pink colouration

Allows to see underlying structures such as the meibomian glands

Is firmly attached to the deep surface of the dorsal plate

Allows to see underlying structures such as blood vessels supply

Lies within 3mm of the cornea

none

Which of the following structures meet at the anterior chamber

Select the correct answer(s).  

(0/0)

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The ciliary body, the pupilary margin of the iris, the cornea and tenons capsule

The ciliary body, the iris and the cornea

The iris, the sclera, the ciliary body and the cornea

The pupilary margin of the iris, the cornea and the sclera

The cornea, the ciliary body and the sclera

none

The ring of Zinn is formed by:

Select the correct answer(s).  

(0/0)

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Small branches of the meningeal artery

Small branches of the muscular branches

Small branches of the long posterior ciliary arteries

Small branches of the anterior ciliary arteries

Small branches of the short posterior ciliary arteries

none

Mark the CORRECT statement with regards to the central artery of the retina:

Select the correct answer(s).  

(0/0)

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Is a branch of the lacrimal artery

Supplies the choroid

Pierces the pia mater before entering the optic nerve

Divides into a superior and an inferior branch within the optic nerve

Enters the posterior eyeball alongside the vein by piercing the lamina cribrosa

none

The primary function of the lens is the refraction of light and it is imperative that the transparent lens have minimal light scatter. Transparency is a function of:

Select the correct answer(s).  

(0/0)

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The short distance between components differing indices relative to the wavelength of light

Few cell organelles in the light path

The absence of blood vessels

An orderly arrangement of fibres

The refraction inde x of the lens

none

Which of the following statements relating to the retinal pigment epithelium is FALSE?

Select the correct answer(s).  

(0/0)

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It is the outermost layer of the retina

It lies adjacent to the ganglion cells of the retina

It is involved in the phagocytosis of the outer segments of photoreceptors

It increases optical quality by forming a dark pigmented wall cover of the inner eyeball

It is formed by columnar epithelial cells

none

What are the two layers of the conjunctiva

Select the correct answer(s).  

(0/0)

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conjunctival epithelium and conunctival endothelium

conjunctival epithelium and conjunctival stroma

conjunctival epithelum and conjunctival submucosa

conjunctival endothelium an conjunctival submucosa

conjunctival endothelium and conjunctival stroma

none

Contraction of the superior rectus muscle produces ( mark the CORRECT statement)

Select the correct answer(s).  

(0/0)

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Primarily, elevation of the eyeball with no secondary action

Primarily, elevation of the eyeball and secondarily adduction and intorsion

Primarily depression of the eyeball and secondarily abduction and extortion

Primarily elevation of the eyeball and secondarily abduction and extortion

Primarily depression of the eyeball and secondarily adduction and extortion