Block 5 Pace Quiz 1

30 Questions | Total Attempts: 463

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Block 5 Pace Quiz 1

Questions and Answers
  • 1. 
    Dr Welke You are seeing a patient with a tumor affecting the brainstem.  The disorder has specifically attacked the nerve marked by the arrow.  Name (i) the marked nerve and (ii) the corresponding clinical deficits.
    • A. 

      Trigeminal Nerve – Loss of voluntary motor function to the muscles of mastication on the right, loss of sensation to the right face

    • B. 

      Trigeminal Nerve – Loss of voluntary motor function to the muscles of mastication on the left, Loss of sensation to the left face

    • C. 

      Facial Nerve – Bell’s palsy on the left, loss of taste on the patient’s left

    • D. 

      Facial Nerve – Bell’s palsy on the right, loss of taste on the patient’s right

    • E. 

      Trochlear Nerve – Trochlear nerve palsy

  • 2. 
    A patient has a stroke in the branches of the artery marked in the below graphic.  As the physician, you know (i) the name of syndrome the stroke will cause and (ii) the corresponding clinical deficit that the syndrome will produce.
    • A. 

      Superior Alternating Syndrome – Right oculomotor nerve palsy

    • B. 

      Lateral Medullary Syndrome – Loss of taste on the patient’s left

    • C. 

      Superior Alternating Syndrome – Left oculomotor nerve palsy

    • D. 

      Lateral Medullary Syndrome – Loss of taste on the patient’s right

    • E. 

      Medial Medullary Syndrome – Loss of voluntary motor function on the patient’s left.

  • 3. 
    You are in Gross Anatomy Laboratory dissecting the maxillary division of CN V.  You discover the zygomatic nerve and are carefully cleaning this nerve so you can demonstrate it to the other groups.  You know that this nerve carries three type of axons, one which is parasympathetic.  Name (i) the axon modality type for the parasympathetic axon (ii) the cranial nerve that this axon is resident of and (iii) what this nerve innervates.
    • A. 

      SVA – CN V – Taste buds on the palate

    • B. 

      SVA – CN VII – Taste buds on the palate

    • C. 

      GVE – CN V – Lacrimal gland

    • D. 

      GSE – CN VII – muscles of facial expression

    • E. 

      GVE – CN VII – Lacrimal gland

  • 4. 
    A research scientist is interested in creating a discrete lesion in the area of the spinal cord marked below.  Name the (i) tract he is interested in affecting and (ii) type of information that tract carries.
    • A. 

      Lateral Corticospinal Tract – voluntary motor function to the patient’s left

    • B. 

      Lateral Corticospinal Tract – voluntary motor function to the patient’s right

    • C. 

      Spinothalamic Tract – pain and temperature from below this level on the patient’s left

    • D. 

      Spinothalamic Tract – pain and temperature from the face on the patient’s left.

    • E. 

      Spinothalamic Tract – pain and temperature from below this level on the patient’s right

  • 5. 
    Which of the following grouping of nuclei of the hypothalamus all regulate feeding behaviors?
    • A. 

      Dorsomedial nucleus, lateral nucleus, ventromedial nucleus

    • B. 

      Dorsomedial nucleus, lateral nucleus, anterior nucleus

    • C. 

      Arcuate nucleus, lateral nucleus, paraventricular nucleus

    • D. 

      Arcuate nucleus, suprachiasmatic nucleus, posterior nucleus

    • E. 

      Ventromedial nucleus, posterior nucleus, paraventricular nucleus

  • 6. 
    Your great uncle has a small infarct in a cerebellar artery that affects only the interposed nuclei of the cerebellum.  This nucleus is associated with (i) what lobe of the cerebellum and (ii) helps modulate what motor output?
    • A. 

      Anterior lobe - adjusts medial motor systems for balance and posture

    • B. 

      Posterior lobe - adjusts medial motor systems for balance and posture

    • C. 

      Posterior lobe - adjusts lateral descending systems for extremities

    • D. 

      Flocculo-nodular lobe - adjusts medial motor systems for balance and posture

    • E. 

      Anterior lobe – adjusts lateral descending systems for extremities

  • 7. 
    Dr Martin A young child is diagnosed with a communicating or non obstructive hydrocephalus.  Which of the following is the most likely cause of this condition?  
    • A. 

      Blockage of the foramen of Monroe

    • B. 

      Blockage of the aqueduct of sylvius

    • C. 

      Blockage of the foramen of magendie in 4th ventricle

    • D. 

      Blockage of the arachnoid villi

  • 8. 
    Dr. O’Donoghue  As a medical student, you are tapping the patellar tendon to activate the knee jerk reflex.  The resulting reflex is within a normal range. Which sensory organ is activated in response to this stimulus?
    • A. 

      Golgi tendon organ

    • B. 

      Merkel cell

    • C. 

      Pacinian corpuscle

    • D. 

      Muscle spindle

    • E. 

      Ruffini ending

  • 9. 
    While recovering from a football game collision, a 27-year-old man complains that everything he eats “tastes funny.” Which of the following specifies the distorted sense of taste experienced by this man?
    • A. 

      Ageusia

    • B. 

      Dysgeusia

    • C. 

      Dysosmia

    • D. 

      Anosmia

    • E. 

      Hyposmia

  • 10. 
    A 73-year-old woman is brought to the Emergency Department by her husband. The examination reveals an otherwise healthy trim woman who had a headache that responded to an OTC medication but was followed by a sudden onset of involuntary flinging movements of her right extremities, most pronounced in her right upper extremity. CT reveals a small localized hemorrhagic lesion. This lesion is most likely located in which basal nucleus?
    • A. 

      Left caudate and putamen

    • B. 

      Left subthalamic nucleus

    • C. 

      Left globus pallidus

    • D. 

      Right putamen

    • E. 

      Right subthalamic nucleus

  • 11. 
    A 3-year-old girl is brought to the Emergency Department (ED) by her mother. The history is well known to the Chief of the ED. The current examination reveals that the girl has burns on both hands from touching a hot burner. She has an unusual neurological disorder (probably inherited) that greatly reduces her sensitivity to pain and temperature. Which fiber type/s is/are not functioning properly in this girl?  
    • A. 

    • B. 

    • C. 

      Aδ only

    • D. 

      Aδ and C

    • E. 

      C only

  • 12. 
    A 25-year old woman suffers head injuries from an automobile accident.  Her MRI reveals an epidural hematoma.  Between which two structures has blood accumulated?
    • A. 

      Between the arachnoid and the pia mater.

    • B. 

      Between the dura and the pia mater.

    • C. 

      Between the dura and the arachnoid layer.

    • D. 

      Between the pia and sub arachnoid layer.

    • E. 

      Between the skull and the dura.

  • 13. 
    A 34-year old man is rushed to the emergency room from the site of a car accident. An MRI reveals a lesion at the level of the midbrain. His upper and lower limbs are extended. Name (i) the type of rigidity and (ii) the tract/tracts involved in the extension of the limbs.
    • A. 

      Decorticate; Rubrospinal tract

    • B. 

      Decorticate; Medial reticulospinal and lateral vestibulospinal tract

    • C. 

      Decerebrate; Rubrospinal and lateral vestibulospinal tract

    • D. 

      Decerebrate; Medial reticulospinal and lateral vestibulospinal tract

    • E. 

      Decerebrate; Rubrospinal tract

  • 14. 
    A 44-year old man presents with a “cape-like” loss of sensation (pain and temperature) to his back and arms. An MRI reveals a cyst at the cervical level of his spinal cord. Name (i) the disorder and (ii) the tract that is affected.
    • A. 

      Brown Séquard syndrome, Spinothalamic tract

    • B. 

      Brown Séquard syndrome, Corticospinal tract

    • C. 

      Syringomyelia, Spinothalamic tract

    • D. 

      Syringomyelia, Corticospinal tract

    • E. 

      Syringomyelia, Tectospinal tract

  • 15. 
    Dr Dhiman A 25-year-old woman sustains a head injury. A radiograph of the skull shows a fracture of the foramen ovale.  Which of the following nerves would most likely be damaged by this event?
    • A. 

      Ophthalmic nerve

    • B. 

      Maxillary nerve

    • C. 

      Optic nerve

    • D. 

      Mandibular nerve

    • E. 

      Trochlear nerve

  • 16. 
    Dr Vigh   Which of the following layers of the scalp constitute the "danger" layer?
    • A. 

      Loose areolar tissue layer

    • B. 

      Skin

    • C. 

      Pericranium

    • D. 

      Subcutaneous layer

    • E. 

      Epicranial aponeurosis

  • 17. 
    A 20-year old man presents double vision after a car accident. The ER resident tests eye muscle functions and find that the patient is unable to elevate the abducted right eye. Which muscle is not functioning properly?
    • A. 

      Inferior oblique

    • B. 

      Inferior rectus

    • C. 

      Superior rectus

    • D. 

      Superior oblique

    • E. 

      Lateral rectus

  • 18. 
    A patient with a goiter went through a thyroidectomy. When ligating the inferior thyroid artery, a profuse bleeding covered the view and made it difficult to identify structures in the area. The surgeon made every effort to avoid injury of the structure closely related to the inferior thyroid artery. Which is the structure that he was most concerned about?
    • A. 

      Recurrent laryngeal nerve

    • B. 

      External laryngeal nerve

    • C. 

      Internal laryngeal nerve

    • D. 

      Superior laryngeal artery

    • E. 

      Hypoglossal nerve

  • 19. 
    Dr Sharma   A 24-year-old graduate student suffers a fall from a ladder and was left paralyzed from his waist down. After initial medical management was unsuccessful for recovery of function of his legs, he was admitted to a spinal cord injury rehabilitation center.  There he worked diligently at the exercises and techniques, aimed at recovery.  After six weeks of intensive work he has shown no improvement in his motor function. He tearfully tells his trainer that he feels that it is not worth the effort anymore and that he would like to have a motorized chair so that he could get out of the place and get back with his studies. The behavior shown by the patient at this time suggests he is in what phase of the grief process?
    • A. 

      Denial

    • B. 

      Acceptance

    • C. 

      Anger

    • D. 

      Bargaining

    • E. 

      Depression

  • 20. 
    Dr Meisenberg   y-aminobutyric acid (GABA) is the most important inhibitory neurotransmitter in the brain. GABA suppresses anxiety, and a deficiency of GABA causes anxiety. You work for a secret service that wants to develop an anxiety-inducing drug for interrogations. The best strategy to accomplish this aim would be a drug that:
    • A. 

      Inhibits glutamate decarboxylase

    • B. 

      Inhibits GABA decarboxylase

    • C. 

      Keeps the GABA-operated chloride channel open

    • D. 

      Inhibits GABA transaminase

    • E. 

      Inhibits the sodium-dependent GABA transporter in the presynaptic terminal

  • 21. 
    Dr O'Donoghue   When the following cells are activated, REM sleep is turned ON:
    • A. 

      Noradrenergic neurons of locus coeruleus, serotoninergic neurons of the Raphe

    • B. 

      Noradrenergic neurons of locus coeruleus, GABAergic neurons of the RF

    • C. 

      Cholinergic neurons of the pontine RF, noradrenergic neurons of locus coeruleus

    • D. 

      GABAergic neurons of the RF, serotoninergic neurons of the Raphe

    • E. 

      Cholinergic neurons of the pontine RF, GABAergic neurons of the RF

  • 22. 
    What aspect of language would be affected by a lesion of BA 44/45 of the dominant hemisphere?
    • A. 

      Language understanding

    • B. 

      Language production

    • C. 

      Semantic aspects of language

    • D. 

      Prosodic aspects of language

    • E. 

      Syntactic aspects of language

  • 23. 
    You are trying not to fall asleep during a boring lecture. Suddenly, you feel a bug crawling on your skin, which instantly wakes you up. Which part of your reticular formation was initially involved in this increase of your attention?
    • A. 

      Raphe

    • B. 

      Lateral RF

    • C. 

      Parapontine RF

    • D. 

      Locus coeruleus

    • E. 

      Medial RF

  • 24. 
    You may find large pyramidal cells in which cortical layer?
    • A. 

      I

    • B. 

      II

    • C. 

      V

    • D. 

      IV

    • E. 

      VI

  • 25. 
    Dr Coffin L-DOPA is always given with a decarboxylase inhibitor to increase the peripheral plasma half life or duration of what neurochemical?
    • A. 

      Dopamine

    • B. 

      L-DOPA

    • C. 

      Serotonin

    • D. 

      Adenosine

    • E. 

      Carbidopa

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