Pns: Exam 4 Prep

41 Questions | Total Attempts: 57

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Nerve Quizzes & Trivia

Questions and Answers
  • 1. 
    The patellar "knee jerk" reflex is an example of a(n) _____________________.
    • A. 

      Stretch reflex

    • B. 

      Crossed-extensor reflex

    • C. 

      Stress reflex

    • D. 

      Extensor thrust reflex

  • 2. 
    The ________________________ nerve is not a branch of the trigeminal nerve.
    • A. 

      Cervical

    • B. 

      Maxillary

    • C. 

      Ophthalmic

    • D. 

      Mandibular

  • 3. 
    Which of the following nerves does not arise from the brachial plexus?
    • A. 

      Ulnar

    • B. 

      Radial

    • C. 

      Median

    • D. 

      Phrenic

  • 4. 
    Which of the following is not an example of an exteroceptor?
    • A. 

      Baroreceptor

    • B. 

      Pain

    • C. 

      Temperature

    • D. 

      Touch

    • E. 

      Pressure

  • 5. 
    Which of the following is not a main level of neural integration in the somatosensory system?
    • A. 

      Perceptual

    • B. 

      Segmental

    • C. 

      Receptor

    • D. 

      Circuit

  • 6. 
    The posterior side of the thigh, leg, and foot is served by the ___________________ nerve.
    • A. 

      Common fibular

    • B. 

      Femoral

    • C. 

      Tibial

    • D. 

      Obturator

  • 7. 
    Starting at the spinal cord, the subdivisions of the brachial plexus are (in order):
    • A. 

      Trunks, divisions, cords, and roots

    • B. 

      Roots, divisions, cords, and trunks

    • C. 

      Divisions, roots, trunks, and cords

    • D. 

      Roots, trunks, divisions, and cords

  • 8. 
    The cranial nerve with a dual origin (brain and spinal cord) is the ______________________.
    • A. 

      Accessory

    • B. 

      Hypoglossal

    • C. 

      Vagus

    • D. 

      Glossopharyngeal

  • 9. 
    Which of the following is an incorrect statement regarding the occurrence of a sensation?
    • A. 

      The stimulus energy must be converted into the energy of a graded potential called a transduction potential

    • B. 

      A generator potential in the associated sensory neuron must reach threshold

    • C. 

      The stimulus energy must occur within the receptor's receptive field

    • D. 

      The stimulus energy must match the specificity of the receptor

  • 10. 
    A major nerve of the lumbar plexus is the ______________________.
    • A. 

      Femoral

    • B. 

      Iliohypogastric

    • C. 

      Sciatic

    • D. 

      Ilioinguinal

  • 11. 
    Spinal nerve exiting the cord from the level of L4 to S4 form the ____________________.
    • A. 

      Femoral plexus

    • B. 

      Sacral plexus

    • C. 

      Thoracic plexus

    • D. 

      Lumbar plexus

  • 12. 
    The abducens nerve ______________________________.
    • A. 

      Exits from the medulla

    • B. 

      If paralyzed, exhibits Bell's palsy

    • C. 

      Relays sensory information from taste buds on the tongue

    • D. 

      Supplies innervation to the lateral rectus muscle of the eye

  • 13. 
    Inborn or intristic reflexes are __________________________.
    • A. 

      Always mediated by the brain

    • B. 

      Involuntary, yet may be modified by learned behavior

    • C. 

      Rapid, predictable, learned responses

    • D. 

      Autonomic only

  • 14. 
    Which of the following is not an aspect of sensory perception?
    • A. 

      Spatial discrimination

    • B. 

      Feature attraction

    • C. 

      Magnitude estimation

    • D. 

      Quality estimation

    • E. 

      Pattern recognition

  • 15. 
    Striking the "funny bone" is actually stimulation of (or injury to) the ________________________.
    • A. 

      Radial nerve

    • B. 

      Ulnar nerve

    • C. 

      Sciatic nerve

    • D. 

      Median nerve

  • 16. 
    A reflex that causes muscle relaxation and lengthening in response to muscle tension is called a ___________________________________.
    • A. 

      Crossed-extensor reflex

    • B. 

      Plantar reflex

    • C. 

      Flexor reflex

    • D. 

      Golgi tendon reflex

  • 17. 
    Pressure, pain, and temperature receptors in the skin are ___________________________.
    • A. 

      Exteroceptors

    • B. 

      Mechanoreceptors

    • C. 

      Interoceptors

    • D. 

      Proprioceptors

  • 18. 
    Potentially damaging stimuli that result in pain are selectively detected by _____________________________.
    • A. 

      Interoceptors

    • B. 

      Nociceptors

    • C. 

      Proprioceptors

    • D. 

      Photoreceptors

  • 19. 
    The trochlear nerve conveys proprioceptor impulses from the _____________ to the brain
    • A. 

      Medial rectus muscle

    • B. 

      Superior rectus muscle

    • C. 

      Inferior rectus muscle

    • D. 

      Lateral rectus muscle

  • 20. 
    Nerves that carry impulses toward the CNS only are ________________________.
    • A. 

      Afferent nerves

    • B. 

      Mixed nerves

    • C. 

      Efferent nerves

    • D. 

      Motor nerves

  • 21. 
    After axonal injury, regeneration in peripheral nerves is guided by ______________________.
    • A. 

      Schwann cells

    • B. 

      Dendrites

    • C. 

      Golgi organs

    • D. 

      Wallerian cells

  • 22. 
    Regeneration within the CNS ___________________________________.
    • A. 

      Typically allows axonal sprouting of 20 mm

    • B. 

      Is promoted by growth inhibitors and glial scars

    • C. 

      Is more successful than with the PNS

    • D. 

      Is prevented due to grown-inhibiting proteins of oligodendrocytes

  • 23. 
    In a crossed-extensor reflex, if the right arm was grabbed it would flex and the left arm would __________________________
    • A. 

      Extend

    • B. 

      Abduct

    • C. 

      Adduct

    • D. 

      Also flex

  • 24. 
    Select the correct definition
    • A. 

      Spatial discrimination allows us to recognize textures

    • B. 

      Magnitude estimation is the simplest level of sensation

    • C. 

      Pattern recognition allows us to see a familiar face

    • D. 

      Perceptual detection is the ability to detect how much stimulus is applied to the body

  • 25. 
    All processing at the circuit level going up to the perceptual level must synapse in the ___________________________.
    • A. 

      Medulla

    • B. 

      Thalamus

    • C. 

      Reticular formation

    • D. 

      Pons

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