Neurophysiology Skills Quiz

108 Questions | Total Attempts: 47

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Neurophysiology Skills Quiz

Do you know that neurophysiology is the study of nerve cells (neurons) as they receive and transmit information? It is a branch of physiology and neuroscience that focuses on the functioning of the nervous system. The word originates from the Greek word νεῦρον meaning "nerve" and -λογία meaning "knowledge". Test your neurophysiology skills in this quiz and improve your knowledge.


Questions and Answers
  • 1. 
    Which of the following statements regarding the taste pathway is FALSE
    • A. 

      CNVII, CNIX, and CNX are primary afferents that synapse at the solitary nucleus

    • B. 

      The parabrachial tract relays the third-order fiber that synapses on the lateral aspect of the parietal cortex

    • C. 

      Brodmann's area 3,1, and 2 receive synaptic innervation from the VPM of the thalamus

    • D. 

      The taste reflex arc from the solitary tract can be in response to a NaCl stimulus 

    • E. 

      The solitary nucleus is located anteriorly to the cerebellum

  • 2. 
    In the taste pathway, the 7th, 9th, and 10th cranial nerves all synapse on ______________
    • A. 

      Solitary nucleus

    • B. 

      Ganglion nucleus

    • C. 

      Trigeminal nucleus 

    • D. 

      Brodmann's area 3, 1, 2

  • 3. 
    Which of the following is the correct order for the taste pathway beginning at the anterior 2/3 of the tongue
    • A. 

      Chorda Tympani --> CN VII --> solitary nucleus --> VPM of thalamus --> lateral surface of parietal cortex broadmann's #3,1,2

    • B. 

      Chorda tympani --> CN XI --> solitary nucleus --> VPM of thalamus --> lateral surface of parietal cortex broadmann's #3,1,2

    • C. 

      Chorda tympani --> CN X --> solitary nucleus --> VPM of thalamus --> lateral surface of parietal cortex broadmann's #3,1,2

    • D. 

      Geniculate ganglion --> CN VII --> solitary nucleus--> VPM of thalamus --> lateral surface of parietal cortex broadmann's #3,1,2

  • 4. 
    Which of the following is in the correct order for the perceptual taste pathway beginning from the posterior 1/3 of the tongue
    • A. 

      CN IX --> solitary nucleus --> VPM of thalamus --> lateral surface of parietal cortex brodmanns # 3,1,2

    • B. 

      CN X --> solitary nucleus --> VML of thalamus --> medial surface of parietal cortex brodmanns # 44

    • C. 

      CN VII --> Chorda tympani --> solitary nucleus --> VPM of thalamus --> lateral surface of cortex brodmanns #3,2,1

    • D. 

      Inferior ganglion of CN IX --> solitary nucleus ---> salivary nuclei (CN VII, IX)

  • 5. 
    Which of the following are factors that are contributed to the final perception of taste (select all that apply)
    • A. 

      Olfactory system

    • B. 

      Tactile input

    • C. 

      Limbic system

    • D. 

      Taste bud activation

    • E. 

      Massecation

    • F. 

      Visual system

    • G. 

      Motor system

  • 6. 
    Which of the following is a reason why our thresholds for some tastes are lower than others
    • A. 

      Sour and bitter thresholds are lower, making us super sensitive. ---> usually sour and bitter tastes represent harmful foods

    • B. 

      Sweet and salty thresholds are lower, making us super sensitive ---> usually sweet and salty tastes represent harmful foods

    • C. 

      Sour and bitter thresholds are lower, making us super insensitive. ---> usually sour and bitter tastes represent beneficial foods

    • D. 

      Sour and bitter thresholds are the same as sweet and salty --> we love candy

  • 7. 
    Approximately how many taste buds are found in the oral/buccal cavity?
    • A. 

      ~5,000

    • B. 

      ~ 500

    • C. 

      ~50,000

    • D. 

      2

  • 8. 
    Select the 3 cell types found WITHIN a taste bud
    • A. 

      Receptor cell

    • B. 

      Supporting cells

    • C. 

      Basal cells 

    • D. 

      Wing cells

    • E. 

      Stem cells

    • F. 

      Neuronal cells

  • 9. 
    The cells within a taste bud are replaced about every _______________
    • A. 

      10 days 

    • B. 

      10 months 

    • C. 

      10 hours 

    • D. 

      10 years 

    • E. 

      10 minutes 

  • 10. 
    Which of the following taste receptors initiate signal transduction by the influx of Na+ ions through a Na+ channel leading the depolarization of the receptor
    • A. 

      Salty

    • B. 

      Sour

    • C. 

      Bitter

    • D. 

      Sweet

  • 11. 
    Which of the following taste receptors initiate signal transduction by the binding of an H+ ion to a leaky K+ channel, closing it. leading to depolarization of the receptor cell
    • A. 

      Sour

    • B. 

      Sweet

    • C. 

      Salty

    • D. 

      Bitter

  • 12. 
    Which of the following taste receptors initiate signal transduction by the binding of a substance to a receptor, activating its 2nd messenger system and ultimately DESTROYING cAMP, leading to the closing of K+ channels and membrane depolarization
    • A. 

      Bitter

    • B. 

      Sweet

    • C. 

      Sour

    • D. 

      Salty

  • 13. 
    Which of the following taste receptors initiate signal transduction by the binding of a substance to a receptor, activating its 2nd messenger system and ultimately PRODUCES cAMP. this results in the closing of K+ channels and receptor depolarization
    • A. 

      Sweet

    • B. 

      Sour

    • C. 

      Bitter

    • D. 

      Salty

  • 14. 
    True or false? taste receptors are incapable of producing an action potential 
    • A. 

      True

    • B. 

      False

  • 15. 
    Which of the following are the class of primary afferent nerves in the taste pathway?
    • A. 

      III

    • B. 

      IV

    • C. 

      II

    • D. 

      Ia

    • E. 

      Ib

  • 16. 
    The taste pathway has an addition branch to the _______________ and _______________ which provides input on pleasure/pain, hunger/thirst/satiety centers
    • A. 

      Hypothalamus; amygdala

    • B. 

      Hypothalamus; thalamus

    • C. 

      Hypothalamus; limbic system

    • D. 

      Wernicke's area; broca's area

  • 17. 
    Which of the following nuclei are involved in taste pathways to the centers for pleasure/pain, hunger/thirst/satiety but NOT in perceptual or reflex pathways
    • A. 

      Parabrachial nuclei

    • B. 

      Ventro posteriormedial nucleus of thalamus 

    • C. 

      Parietal nucleus

    • D. 

      CN VII nucleus

  • 18. 
    The area of the human olfactory epithelium is ~ ___________________ mm2
    • A. 

      50

    • B. 

      5

    • C. 

      100

    • D. 

      10

  • 19. 
    True or false? the receptor cells of the olfactory system are incapable of generating an action potential 
    • A. 

      True

    • B. 

      False

  • 20. 
    FUN FACT Q: dogs have _________x more olfactory epithelium than humans and can smell ________  
    • A. 

      20; 7 miles away

    • B. 

      5; 7 feet away

    • C. 

      20; 7 minutes away

    • D. 

      5; 7 miles away

  • 21. 
    Olfactory receptor cells, transduce a signal via:
    • A. 

      A second messenger system and is slower than other systems

    • B. 

      Primary messenger system and is faster than other systems

    • C. 

      Graded membrane potential and is faster than other systems 

    • D. 

      Na+/K+ channels and is slower than other systems 

  • 22. 
    The primary afferent neuron of the olfactory epithelium is
    • A. 

      Group ia

    • B. 

      Group II

    • C. 

      Group III

    • D. 

      Group IV 

    • E. 

      Group Ib

  • 23. 
    The thalamus is the major source of sensory information to the primary sensory cortex for all senses
    • A. 

      True

    • B. 

      False

  • 24. 
    Which of the following is NOT a unique characteristic of the sensory olfactory system
    • A. 

      Information is sent to the cortex first then the thalamus 

    • B. 

      Receptor cell is a neuron

    • C. 

      Only two cell in the pathway

    • D. 

      Information is sent to the thalamus first, then the cortex

  • 25. 
    Light "crude" touch and pressure (tickle, itch), as well as sexual stimulation, use which 2 afferent neurons groups
    • A. 

      Group III

    • B. 

      Group IV

    • C. 

      Group II

    • D. 

      Group Ia

    • E. 

      Group Ib

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