Brain Question

52 Questions | Total Attempts: 33

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Brain Quizzes & Trivia

Questions and Answers
  • 1. 
    The ʺknee jerkʺ reflex is an example of a(n) ________.
    • A. 

      Extensor thrust reflex

    • B. 

      Stress reflex

    • C. 

      Cross extensor reflex

    • D. 

      Stretch reflex

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

      Ophthalmic

    • B. 

      Maxillary

    • C. 

      Cervical

    • D. 

      Mandibular

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

      Median

    • B. 

      Phrenic

    • C. 

      Radial

    • D. 

      Ulnar

  • 4. 
    Which of the following is at the lowest level of the CNS?
    • A. 

      Direct system

    • B. 

      Indirect system

    • C. 

      Projection level

    • D. 

      CPG

  • 5. 
    The three primary levels of neural integration in a sensory system include all of the following except the ________.
    • A. 

      Receptor level

    • B. 

      Circuit level

    • C. 

      Perceptual level

    • D. 

      Effector level

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

      Obturator

    • B. 

      Common fibular

    • C. 

      Tibial

    • D. 

      Femoral

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

      Rami, trunks, divisions, and cords

    • B. 

      Rami, divisions, cords, and trunks

    • C. 

      Divisions, rami, trunks, and cords

    • D. 

      Trunks, divisions, cords, and rami

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

      Hypoglossal

    • B. 

      Accessory

    • C. 

      Vagus

    • D. 

      Glossopharyngeal

  • 9. 
    Which of the following is not a nerve plexus?
    • A. 

      Brachial

    • B. 

      Cervical

    • C. 

      Lumbar

    • D. 

      Thoracic

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

      Femoral

    • B. 

      Iliohypogastric

    • C. 

      Sciatic

    • D. 

      Ilioinguinal

  • 11. 
    Spinal nerves exiting the cord from the level of L4 to S4 form the ________.
    • A. 

      Lumbar plexus

    • B. 

      Femoral plexus

    • C. 

      Sacral plexus

    • D. 

      Thoracic plexus

  • 12. 
    The abducens nerve ________.
    • A. 

      Supplies innervation to the lateral rectus muscle of the eye

    • B. 

      Relays sensory information from taste buds on the tongue

    • C. 

      Exits from the medulla

    • D. 

      If paralyzed, exhibits Bellʹs palsy

  • 13. 
    Basic reflexes ________.
    • A. 

      Are rapid, predictable, learned responses

    • B. 

      May be modified by learned behavior

    • C. 

      Are autonomic only

    • D. 

      Are always mediated by the brain

  • 14. 
    • A. 

      The center may be a single synapse between a motor and a sensory neuron.

    • B. 

      There are always multiple synapses with chains of interneurons.

    • C. 

      It is always located in the CNS.

    • D. 

      The center is a simple reflex arc.

  • 15. 
    Striking the ʺfunny boneʺ is actually stimulation of the ________.
    • A. 

      Radial nerve

    • B. 

      Sciatic nerve

    • C. 

      Ulnar nerve

    • D. 

      Median nerve

  • 16. 
    Which of the following numbers of pairs of spinal nerves is correct?
    • A. 

      Six cervical

    • B. 

      Twelve thoracic

    • C. 

      Six lumbar

    • D. 

      Eight sacral

  • 17. 
    Select the statement about plexuses that is most correct ________.
    • A. 

      The dorsal rami of all spinal nerves unite to form complex networks

    • B. 

      Only ventral rami form plexuses

    • C. 

      Each branch of the plexus contains fibers from a single spinal nerve

    • D. 

      The ventral rami of thoracic spinal nerves unite to form the thoracic plexus

  • 18. 
    A reflex that causes muscle relaxation and lengthening in response to muscle contraction is called a ________.
    • A. 

      Golgi tendon reflex

    • B. 

      Flexor reflex

    • C. 

      Crossed extensor reflex

    • D. 

      Plantar reflex

  • 19. 
    Pressure, pain, and temperature receptors are ________.
    • A. 

      Interoceptors

    • B. 

      Exteroceptors

    • C. 

      Proprioceptors

    • D. 

      Chemoreceptors

  • 20. 
    Potentially damaging stimuli that result in pain are selectively detected by ________.
    • A. 

      Interoceptors

    • B. 

      Photoreceptors

    • C. 

      Nociceptors

    • D. 

      Proprioceptors

  • 21. 
    Meissnerʹs corpuscles ________.
    • A. 

      Are found primarily in connective tissue

    • B. 

      Are anatomically unencapsulated

    • C. 

      Are interoceptors

    • D. 

      Are mechanoreceptors

  • 22. 
    Which receptors adapt most slowly?
    • A. 

      Smell receptors

    • B. 

      Pressure receptors

    • C. 

      Nociceptors

    • D. 

      Touch receptors

  • 23. 
    The abducens nerve conveys proprioceptor impulses from the ________ to the brain.
    • A. 

      Medial rectus muscle

    • B. 

      Lateral rectus muscle

    • C. 

      Superior rectus muscle

    • D. 

      Inferior rectus muscle

  • 24. 
    Nerves that carry impulses toward the CNS only are ________.
    • A. 

      Afferent nerves

    • B. 

      Efferent nerves

    • C. 

      Motor nerves

    • D. 

      Mixed nerves

  • 25. 
    Nerves that carry impulses toward the CNS only are ________.
    • A. 

      Afferent nerves

    • B. 

      Efferent nerves

    • C. 

      Motor nerves

    • D. 

      Mixed nerves