H&N 2: Eye and Orbit

1.

1 point

The junction of the retina and the ciliary process, where no more photo-sensitive cells are found, is termed the...

Ciliary process

Fovea

Trabecular meshwork

Ora serrata

Zona glomerulosa

2.

1 point

The lens of the eye develops from which what layer of embryonic tissue?

Endoderm

Mesoderm

Neural crest cells

Ectoderm

3.

1 point

Which of the following is NOT part of the uvea of the eye?

Choroid

All are part of the uvea

Iris

Cornea

Ciliary body

4.

1 point

What gene is required for the surface ectoderm to respond to inductive signals in development of the eye?

Pax-6

HOX-3

SHH

None of these

Sox2

5.

1 point

POSTganglionic parasympathetic secretomotor stimulation of the lacrimal gland is carried by what cranial nerve?

Mandibular nerve, V3

Opthalmic nerve, V1

Facial Nerve, VII

Optic Nerve, II

Maxillary nerve, V2

6.

1 point

Which structure of the eye contains the constrictor pupillae and dilator pupillae muscles?

Cornea

Ciliary body

Pupil

Eyelid

Iris

7.

1 point

Place the following layers of the retina in the correct order, starting with that which light must pass through first:
I: Nerve fiber layer
II: Outer nuclear layer
III: Inner nuclear layer
IV: Layer of rods and cones
V: Ganglion cell layer
VI: Inner plexiform layer
VII: Outer plexiform layer

I, V, VI, III, VII, II, IV

None of these

IV, III, VI, II, VII, V, I

IV, II, VII, III, VI, V, I

I, VII, V, II, VI, III, IV

8.

1 point

If the choroid fissure fails to close during embryonic development, which condition is likely to develop in child postnatally?

Coloboma

Macular degeneration

Strabismis

Glaucoma

Retinal detachment

9.

1 point

The Meibomian glands of the eye are found in the...

Eyelid

Sclera

Lacrimal apparatus

Ciliary body

Conjunctiva

10.

1 point

Which of the following would not be caused by an injury to cervical sympathetic nerves supplying the eye? (Horner's syndrome)

Miosis: constriction of pupil

Enophthlamos: retraction of eye into socket

Anhidrosis: absence of sweating

Vasoconstriction: decreased blood flow to face and neck

Ptosis: drooping of eyelid

11.

1 point

The conjunctiva of the eye is composed of _____, ______, _______ epithelium.

Keratinized

Non-keratinized

Stratified

Simple

Cuboidal

Columnar

Squamous

12.

1 point

Blockage of Schlemm's canal would likely lead to which ocular disease?

Retinitis pigmentosa

Myopia

Macular degeneration

Glaucoma

Cataracts

13.

1 point

Which of the following do NOT run through the tendinous ring of the rectus muscles of the eye?

Trochlear Nerve

Lacrimal Nerve

Optic Nerve

Oculomotor Nerve

Frontal Nerve

Nasociliary Nerve

Abducens Nerve

14.

1 point

Which ganglion is responsible for the the postganglionic sympathetic nerve supply to the eye?

Pterygopalatine ganglion

Superior cervical ganglion

Submandibular ganglion

Otic ganglion

Ciliary ganglion

15.

1 point

True or False: The optic disc contains ONLY cones.

True

False

16.

1 point

Which nerve is directly responsible for the constriction of the pupil during the pupillary light reflex?

Short ciliary nerves

Long ciliary nerves

Frontal nerve

Oculomotor nerve

Nasociliary nerve

17.

1 point

The primary function of the ciliary muscles is to...

Close the eye

Constrict the pupil

Raise the eyelid

Change the shape of the lens

Dilate the pupil

18.

1 point

The buildup of drusen protein in which layer of the retina is responsible for macular degeneration?

Nerve fiber layer

Inner nuclear layer

Layer of rods and cones

Outer nuclear layer

Pigmented epithelium

19.

1 point

The mesenchymal capsule of the optic vesicle does NOT give rise to which of the following parts of the eye?

Anterior chamber

All of these are derived from mesenchyme

Sclera

Choroid

Retina

20.

1 point

Which two elements are responsible for the separation of the of the two optic fields?

SHH

PAX-6

Prefrontal cortex

Ventral Forebrain

Hypophyseal secretion

HOX-A

21.

1 point

The canal of Schlemm connects which two parts of the eye?

Ciliary veins

Vitreous cavity

Anterior chamber

Conjunctiva

Posterior chamber

22.

1 point

This membrane forms the blood-brain barrier of the retina:

Bruch's membrane

Bowman's membrane

Epiretinal membrane

None of these

Descemet's membrane

23.

1 point

Which of the following occur when trying to focus on an object very close to your eye?

Suspensory ligaments of lens relax

Suspensory ligaments of lens contract

Ciliary muscle contracts

Parasympathetic stimulation

Sympathetic stimulation

Ciliary muscle relaxes

24.

1 point

Which of the following nerves are involved in the corneal reflex?

CN III

CN V1

CN VII

CN II

CN V3

25.

1 point

Parasympathetic secretomotor stimulation of the lacrimal gland comes from which autonomic ganglion?

Pterygopalatine ganglion

Submandibular ganglion

Superior cervical ganglion

Otic ganglion

Ciliary ganglion

26.

1 point

Where would you be most likely to find stem cells in the eye?

Ora serrata

Limbus

Cornea

Optic disc

Sclera

27.

1 point

The cell bodies of the bipolar cells of the retina lie in which retinal layer?

Ganglion cell layer

Inner nuclear layer

Inner plexiform layer

Outer plexiform layer

Outer nuclear layer

28.

1 point

The fovea centralis contains...

Rods

Cones

Both rods and cones

Neither rods and cones

29.

1 point

Paralysis of which nerve would cause pure medial deviation of the right eye?

Optic Nerve

Trochlear Nerve

Oculomotor Nerve

Abducens Nerve

Facial Nerve