Neuro-Ophthalmology check your understading W4

Please put the components of the efferent pupillary light reflex (PLR) pathway into the correct order by matching each item with the correct order number:

Iris sphincter muscle

5

Please put the components of the efferent pupillary light reflex (PLR) pathway into the correct order by matching each item with the correct order number:

Ciliary ganglion

3

Please put the components of the efferent pupillary light reflex (PLR) pathway into the correct order by matching each item with the correct order number:

short ciliary nerves

4

Please put the components of the efferent pupillary light reflex (PLR) pathway into the correct order by matching each item with the correct order number:

Nucleus of cranial nerve 3 (Edinger Westphal Nucleus)

1

Please put the components of the efferent pupillary light reflex (PLR) pathway into the correct order by matching each item with the correct order number:

Parasympathetic fibers running with cranial nerve 3

2

Please put the components of the afferent arm of the pupillary light reflex (PLR) pathway into the correct order by matching each item with the correct order number:

Retina

1

Please put the components of the afferent arm of the pupillary light reflex (PLR) pathway into the correct order by matching each item with the correct order number:

Optic nerve

2

Please put the components of the afferent arm of the pupillary light reflex (PLR) pathway into the correct order by matching each item with the correct order number:

Optic tract

4

Please put the components of the afferent arm of the pupillary light reflex (PLR) pathway into the correct order by matching each item with the correct order number:

Optic chiasm

3

Please put the components of the afferent arm of the pupillary light reflex (PLR) pathway into the correct order by matching each item with the correct order number:

Pretectal nucleus

5

Please put the components of the afferent arm of the pupillary light reflex (PLR) pathway into the correct order by matching each item with the correct order number:

Central decussation

6

Please put the components of the afferent arm of the pupillary light reflex (PLR) pathway into the correct order by matching each item with the correct order number:

Synapse on Nucleus of Cranial Nerve 3 (Edinger Westphal Nucleus)

7

Where do the pupillary motor fibers split off to become independent from the vision pathway?

Just before the Lateral Geniculate Nucleus (LGN)

Which of the conditions below may cause a dilated pupil with an afferent pupillary light reflex deficit?

Chronic glaucoma with optic nerve atrophy

Which of the following conditions may cause a dilated pupil with an efferent pupillary light reflex deficit (select all that apply)?

Iris atrophy, Posterior synechia, Parasympathetic denervation

TRUE OR FALSE: With an efferent pupillary light reflex deficit OD, you would have loss of vision OD.

false

What effect would a right visual cortex lesion have on the pupillary light reflexes (PLR)?

No effect; the PLRs would be normal in both eyes

CN 3

Oculomotor

CN 5 Mandibular branch

motor to muscles of mastication

CN 5 Ophthalmic and maxillary branches

Sensation of the eyelids and ocular surface

CN 7

Eyelid closure and facial movement and tone

CN 6

globe reaction

CN 8

Coordinates ocular position and movement

CN 10

Slows heart rate when globe manipulated

vagus nerve

Match each muscle with the correct innervation; put in just the Cranial Nerve number (use regular numbers not Roman numerals).

Dorsal (Superior) Rectus:

Ventral Rectus

Lateral Rectus:

Medial Rectus:

Dorsal (Superior) Oblique:

Ventral Oblique:

Retractor Bulbi:

Dorsal (Superior) Rectus: 3

Ventral Rectus: 3

Lateral Rectus: 6

Medial Rectus: 3

Dorsal (Superior) Oblique: 4

Ventral Oblique: 3

Retractor Bulbi: 6

Which of the components below are part of the vision pathway independent of the PLR pathway (select all that apply)?

Lateral geniculate nucleus

Optic radiations

Visual cortex