A Neurology Quiz - Visual Systems

14 Questions | Total Attempts: 456

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A Neurology Quiz - Visual Systems - Quiz

Neurology is a branch of medicine dealing with disorders of the nervous system. Neurology deals with the diagnosis and treatment of all categories of conditions and disease involving the central and peripheral nervous systems, including their coverings, blood vessels, and all effector tissue, such as muscle. This is a Neurology Quiz about Visual Systems!


Questions and Answers
  • 1. 
    A 73-year aid woman experienced worsening diplopia. MRI examinations showed bilateral roundish parasellar and intracavernous masses, with homogeneous contrast-enhancement. CerebraI angiography revealed bilateral aneurysms of the intracavernous carotid artery. The aneurism was compressing the nerve directly next to the mass. The diplopia was due to progressive bilateral paresis of which muscles?
    • A. 

      Superior oblique

    • B. 

      Inferior oblique

    • C. 

      Lateral rectus

    • D. 

      Medial, superior and inferior rectus, and inferior oblique

    • E. 

      Superior and inferior oblique

  • 2. 
    A 26-year old woman presented with diplopia. The abduction of both eyes were normal. The adduction of both eyes were quite limited in each eye. MRI revealed a multifocal lesion in the pons bilaterally next to the midline. Which structure is most probably affected?
    • A. 

      Medial lernruscus

    • B. 

      Lateral lemniscus

    • C. 

      Abducent nucleus

    • D. 

      PPRF

    • E. 

      Medial longitudinal fascicle

  • 3. 
    A 56-year old male had a sexually transmitted disease 20 years ago after an unprotected sexual encounter. He now presents with neurological problems including cognitive and visual problems. On physical examination you would expect his pupils to:
    • A. 

      React to light and accommodate

    • B. 

      Not accommodate

    • C. 

      Not react to light and not accommodate

    • D. 

      Not react to light and accommodate

    • E. 

      React to light

  • 4. 
    A young boy is brought to the clinic. He appears quite small for his age and complains of not being able to see as well as he used to. Visual field examination reveals a bi-temporal hemianopsia . You suspect a tumor located near which of the following?
    • A. 

      Pituitary gland and stalk

    • B. 

      Calcarine sulcus

    • C. 

      Parieto-occipital sulcus

    • D. 

      Nucleus of crania) nerve III

    • E. 

      Pineal gland

  • 5. 
    A 52-year-old woman has difficulty reading small print in newspapers and magazines. Her ophthalmologist explains to her that she is suffering from a condition due to a loss of her ability to accommodate and focus on near objects. She most likely has which of the following?
    • A. 

      Astigmatism

    • B. 

      Cataracts

    • C. 

      Optic atrophy

    • D. 

      Macular degeneration

    • E. 

      Presbyopia

  • 6. 
    A 50-year old taxi driver is currently hospitalized after suffering from a stroke. During the history, he denied impairment of his vision. The significant findings on physical examination were decreased vision and decreased movement of the vertical movements of his left eye. He also had left homonymous hemianopsia. Based on the findings, his stroke was most likely due to lesion affecting the area supplied which artery?
    • A. 

      Lenticulostriate arteries

    • B. 

      Posterior cerebral arteries

    • C. 

      Anterior cerebral arteries

    • D. 

      Middle cerebral arteries

    • E. 

      Anterior communicating arteries

  • 7. 
    Imaging studies were ordered. If the deficits seen were due to the stroke, the lesion would most likely to be located in shaded area in:
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

    • E. 

      E

  • 8. 
    During a routine neurological examination you perform a corneal reflex text. When you touch the right eye of your patient there is no direct reflex but an intact consensual reflex. This suggests damage to which region of the nervous system?
    • A. 

      Damage to the facial nerve fibers that innervate the ipsilateral orbicularis oculi muscles

    • B. 

      Damage to the ipsilateral sensory fibers of cranial nerve VII

    • C. 

      Damage to the ipsilateral sensory fibers of the ophthalmic branch of the trigeminal nerve

    • D. 

      Damage to the ipsilateral motor fibers of the oculomotor nerve

    • E. 

      Damage to the contralateral motor fibers of the abducens nerve

  • 9. 
    A 21-year old professional female basketball player was advised by her coach to go to see her physician. She could not perform so well lately, she often did not notice the ball coming from the back and she had constant headaches. She said it was probably due to her emotional state, because she broke up with her boyfriend a few months ago. Even her period became very irregular the last few months. The coach wanted the doctor to prescribe some calming pills for her, but the doctor became suspicious that there were some other problems, since he found visual field loss on both temporal sides. His suspicion was confirmed later by MRI. Which of the following is most possible based on the symptoms?
    • A. 

      Meningioma in the optic canal leading to compression of the optic nerve

    • B. 

      Pituitary adenoma, causing compression of the optic chiasma and leading to hormonal deficiencies.

    • C. 

      Carotid aneurysm leading to compression of the optic chiasma and constant headaches.

    • D. 

      Multiple sclerosi5, causing degeneration of the optt C radiation leading to bitemporal hemia nopia.

    • E. 

      Multiple sclerosis; based on her gender and young age, and the demyelination symptoms in both optic nerves

  • 10. 
    The electron micrograph below was taken of a section of the eye. The positions of the landmarks "Photoreceptor outer segments" and "Cap" (designating a capillary) are shown. Of the choices below, the arrow is pointing to the nucleus of which cell type?
    • A. 

      Epithelial cell

    • B. 

      Fibroblast

    • C. 

      Mast cell

    • D. 

      Melanocyte

    • E. 

      Photoreceptor cell

  • 11. 
    Shown above is a drawing of a portion of the iris of the eye. What is the function of the structure located at the tip of the arrow?
    • A. 

      Pigmentation of the iris

    • B. 

      Pupil constriction

    • C. 

      Movement of the lens

    • D. 

      Supplies oxygen and nutrients to the iris

    • E. 

      Pupil dilation

  • 12. 
    Which of the following statements about the choroid of the eye is INCORRECT?
    • A. 

      There are many melanocytes in the choroid.

    • B. 

      There are many venous plexuses in the choroid.

    • C. 

      The anterior rim of the choroid becomes the ciliary body.

    • D. 

      The choroid touches the neural retina

    • E. 

      The choroid is mostly loose connective tissue

  • 13. 
    Oescemet's membrane is found in which structure of the eye?
    • A. 

      Sclera

    • B. 

      Retina

    • C. 

      Iris

    • D. 

      Ciliary body

    • E. 

      Cornea

  • 14. 
    An astigmatism is caused by a region of unequal curvature in
    • A. 

      The lens.

    • B. 

      The cornea.

    • C. 

      A or B.

    • D. 

      The retina.

    • E. 

      A or C.

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