Cranial Nerves
Optic Nerve and Visual Pathwaysame
More Cranial Nerves
General Ocular Anatomy and Physiologytegory Name
Optic Nerve and Visual Pathways
100

Which three branches of the trigeminal nerve provide innervation to the upper eyelid?

  • A. Lacrimal, Supraorbital, Supratrochlear
  • B. Infraorbital, Supratrochlear, Nasociliary
  • C. Supraorbital, Infraorbital, Lacrimal
  • D. Nasociliary, Supratrochlear, Supraorbital


  • A. Lacrimal, Supraorbital, Supratrochlear
100

Which artery provides blood supply to the optic disc?

  • A. Central retinal artery
  • B. Short posterior ciliary arteries
  • C. Long posterior ciliary arteries
  • D. Ophthalmic artery
  • B. Short posterior ciliary arteries
100

Which fibers cross and travel medially in the optic tract?

  • A. Inferior temporal fibers
  • B. Superior nasal fibers
  • C. Inferior nasal fibers
  • D. Superior temporal fibers
  • B. Superior nasal fibers
100

Which visual field defect results from a lesion in the right temporal lobe?

  • A. Right superior homonymous hemianopsia
  • B. Left inferior homonymous hemianopsia
  • C. Right inferior homonymous hemianopsia
  • D. Left superior homonymous hemianopsia
  • D. Left superior homonymous hemianopsia
100
  1. Which artery primarily supplies the lateral geniculate nucleus?
  • A. Anterior cerebral artery
  • B. Middle cerebral artery
  • C. Posterior cerebral artery
  • D. Superior cerebellar artery
  • C. Posterior cerebral artery
200

Which ganglion provides postganglionic sympathetic innervation to the eye?

  • A. Ciliary ganglion
  • B. Superior cervical ganglion
  • C. Pterygopalatine ganglion
  • D. Trigeminal ganglion
  • B. Superior cervical ganglion
200

The optic nerve exits the orbit through which bones?

  • A. Greater wing of sphenoid
  • B. Lesser wing of sphenoid
  • C. Ethmoid bone
  • D. Zygomatic bone
  • B. Lesser wing of sphenoid
200

Inferior optic nerve fibers travel through which of the following lobes before synapsing in the occipital lobe?

  • A. Temporal
  • B. Frontal
  • C. Parietal
  • D. Occipital
  • A. Temporal
200

The most likely cause of binasal visual field defects is:

  • A. Optic neuritis
  • B. Pituitary adenoma
  • C. Glaucoma
  • D. Ischemic optic neuropathy
  • C. Glaucoma
200
  1. Which of the following conditions is most likely to cause a relative afferent pupillary defect (RAPD)?
  • A. Retinal detachment
  • B. Optic neuritis
  • C. Cataract
  • D. Refractive error
  • B. Optic neuritis
300

Which ganglion provides parasympathetic innervation from the facial nerve to the lacrimal gland for lacrimation?

  • A. Ciliary ganglion
  • B. Pterygopalatine ganglion
  • C. Submandibular ganglion
  • D. Otic ganglion
  • B. Pterygopalatine ganglion
300

The meninges and myelination of the optic nerve begin where?

  • A. Optic chiasm
  • B. Optic tract
  • C. Lamina cribrosa
  • D. Optic radiations
  • C. Lamina cribrosa
300

A congruous visual field defect is most likely due to a lesion where?

  • A. Optic chiasm
  • B. Optic tract
  • C. Occipital lobe
  • D. Temporal lobe


  • C. Occipital lobe
300

A patient with complete visual field loss OD and temporal field loss only OS most likely has a lesion in what location?

  • A. Right optic nerve
  • B. Right optic tract
  • C. Right optic chiasm
  • D. Left optic chiasm
  • C. Right optic chiasm
300
  1. Which cranial nerve innervates the lateral rectus muscle?
  • A. CN III (Oculomotor)
  • B. CN IV (Trochlear)
  • C. CN V (Trigeminal)
  • D. CN VI (Abducens)
  • D. CN VI (Abducens)
400

All of the following muscles receive motor innervation from V3 except:

  • A. Masseter
  • B. Lateral pterygoids
  • C. Temporalis
  • D. Orbicularis oculi
  • D. Orbicularis oculi
400

Which cells provide myelination to the intraorbital optic nerve?

  • A. Oligodendrocytes
  • B. Schwann cells
  • C. Astrocytes
  • D. Microglia
  • A. Oligodendrocytes
400

Superior fibers synapse in what location of the occipital lobe?

  • A. Lingual gyrus
  • B. Preoccipital notch
  • C. Calcarine fissure
  • D. Cuneus gyrus
  • D. Cuneus gyrus
400

Which visual field defect results from a lesion in the left parietal lobe?

  • A. Left superior homonymous hemianopsia
  • B. Left inferior homonymous hemianopsia
  • C. Right superior homonymous hemianopsia
  • D. Right inferior homonymous hemianopsia
  • D. Right inferior homonymous hemianopsia
400
  1. Damage to which cranial nerve would most likely result in difficulty swallowing?
  • A. CN VII (Facial)
  • B. CN IX (Glossopharyngeal)
  • C. CN XI (Accessory)
  • D. CN XII (Hypoglossal)
  • B. CN IX (Glossopharyngeal)
500
  1. A lesion in the left occipital lobe will most likely result in:
  • A. Right homonymous hemianopsia
  • B. Left homonymous hemianopsia
  • C. Bitemporal hemianopsia
  • D. Binasal hemianopsia
  • A. Right homonymous hemianopsia
500

Which section of the optic nerve is the longest?

  • A. Intraocular
  • B. Intracranial
  • C. Intracanalicular
  • D. Intraorbital
  • D. Intraorbital
500

Which two arteries supply blood to the macular fibers in the occipital cortex?

  • A. Anterior cerebral and middle cerebral
  • B. Middle cerebral and posterior cerebral
  • C. Anterior cerebral and posterior cerebral
  • D. Ophthalmic and central retinal
  • B. Middle cerebral and posterior cerebral
500

An incongruous homonymous hemianopsia is most likely due to a lesion at what location?

  • A. Optic nerve
  • B. Optic chiasm
  • C. Optic tract
  • D. Occipital cortex
  • C. Optic tract
500
  1. Which muscle is responsible for intorsion of the eye?
  • A. Superior rectus
  • B. Inferior rectus
  • C. Superior oblique
  • D. Inferior oblique
  • C. Superior oblique
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