Block 5 Neurophysiotherapy BRS W Expl Part 1

17 Questions | Total Attempts: 607

SettingsSettingsSettings
Please wait...
Neurophysiology Quizzes & Trivia

Transferred from a PDF to word, sometimes beta (B) is converted to 13 and m to rn. . . . . Etc. If you find mistakes let me know and I will try to get them corrected quickly. Just drag and copy the question in your email


Questions and Answers
  • 1. 
    Which autonomic receptor mediates secretion of epinephrine by the adrenal medulla?
    • A. 

      Adrenergic a receptors

    • B. 

      Adrenergic 01 receptors

    • C. 

      Adrenergic 02 receptors

    • D. 

      Cholinergic muscarinic receptors

    • E. 

      Cholinergic nicotinic receptors

  • 2. 
    Cutting which structure on the right side  causes blindness in the temporal field of the left eye and the nasal field of the right eye?
    • A. 

      Optic nerve

    • B. 

      Optic chiasm

    • C. 

      Optic tract

    • D. 

      Geniculocalcarine tract

  • 3. 
    Which of the following parts of the body has cortical motoneurons with the largest representation on the primary motor cortex (area 4)?
    • A. 

      Shoulder

    • B. 

      Ankle

    • C. 

      Fingers

    • D. 

      Elbow

    • E. 

      Knee

  • 4. 
    Which adrenergic receptor produces its stimulatory effects by the formation of inositol 1,4,5-triphosphate (IP3) and an increase in intracellular [Ca2+]?
    • A. 

      A1 Receptors

    • B. 

      A2 Receptors

    • C. 

      B1 Receptors

    • D. 

      B2 Receptors

    • E. 

      Muscarinic receptors

    • F. 

      Nicotinic receptors

  • 5. 
    The excessive muscle tone produced in decerebrate rigidity can be reversed by
    • A. 

      Stimulation of group Ia afferents

    • B. 

      Cutting the dorsal roots

    • C. 

      Transection of cerebellar connections to the lateral vestibular nucleus

    • D. 

      Stimulation of a-motoneurons

    • E. 

      Stimulation of •y-motoneurons

  • 6. 
    Administration of which of the following drugs is contraindicated in a 10-year-old child with a history of asthma?
    • A. 

      Albuterol

    • B. 

      Epinephrine

    • C. 

      Isoproterenol

    • D. 

      Norepinephrine

    • E. 

      Propranolol

  • 7. 
    Cutting which structure on the left side causes total blindness in the left eye?
    • A. 

      Optic nerve

    • B. 

      Optic chiasm

    • C. 

      Optic tract

    • D. 

      Geniculocalcarine tract

  • 8. 
    Which reflex is responsible for monosynaptic excitation of ipsilateral homonymous muscle?
    • A. 

      Stretch reflex (myotatic)

    • B. 

      Golgi tendon reflex (inverse myotatic)

    • C. 

      Flexor withdrawal reflex

    • D. 

      Subliminal occlusion reflex

  • 9. 
    Which type of cell in the visual cortex responds best to a moving bar of light?
    • A. 

      Simple

    • B. 

      Complex

    • C. 

      Hypercomplex

    • D. 

      Bipolar

    • E. 

      Ganglion

  • 10. 
    Which autonomic receptor mediates an increase in heart rate?
    • A. 

      Adrenergic a receptors

    • B. 

      Adrenergic B1 receptors

    • C. 

      Adrenergic B2 receptors

    • D. 

      Cholinergic muscarinic receptors

    • E. 

      Cholinergic nicotinic receptors

  • 11. 
    Which of the following is a feature of the sympathetic, but not the parasympathetic, nervous system?
    • A. 

      Ganglia located in the effector organs

    • B. 

      Long preganglionic neurons

    • C. 

      Preganglionic neurons release norepinephrine

    • D. 

      Preganglionic neurons release acetylcholine (ACh)

    • E. 

      Preganglionic neurons originate in the thoracolumbar spinal cord

    • F. 

      Postganglionic neurons synapse on effector organs

    • G. 

      Postganglionic neurons release epinephrine

    • H. 

      Postganglionic neurons release Ach

  • 12. 
    Which of the following statements best describes the basilar membrane of the organ of Corti?
    • A. 

      The apex responds better to low frequencies than the base does

    • B. 

      The base is wider than the apex

    • C. 

      The base is more compliant than the apex

    • D. 

      High frequencies produce maximal displacementof the basilar membrane near the helicotrema

    • E. 

      The apex is relatively stiff compared to the base

  • 13. 
    When compared with the cones of the retina, the rods
    • A. 

      Are more sensitive to low-intensity light

    • B. 

      Adapt to darkness before the cones

    • C. 

      Are most highly concentrated on the fovea

    • D. 

      Are primarily involved in color vision

  • 14. 
    Which of the following responses is mediated by parasympathetic muscarinic receptors
    • A. 

      Dilation of bronchiolar smooth muscle

    • B. 

      Erection

    • C. 

      Ejaculation

    • D. 

      Constriction of gastrointestinal (GI) sphincters

    • E. 

      Increased cardiac contractility

  • 15. 
    Which of the following is a property of C fibers?
    • A. 

      Have the slowest conduction velocity of any nerve fiber type

    • B. 

      Have the largest diameter of any nerve fiber type

    • C. 

      Are afferent nerves from muscle spindles

    • D. 

      Are afferent nerves from Golgi tendon organs

    • E. 

      Are preganglionic autonomic fibers

  • 16. 
    A patient with chronic hypertension is treated with prazosin by his physician. The treatment successfully decreases the patient's blood pressure to within the normal range. What is the mechanism of the drug's action?
    • A. 

      Inhibition of B 1 receptors in the sinoatrial (SA) node

    • B. 

      Inhibition of P2 receptors in the SA node

    • C. 

      Stimulation of muscarinic receptors in the SA node

    • D. 

      Stimulation of nicotinic receptors in the SA node

    • E. 

      Inhibition of B1 receptors in ventricular muscle

    • F. 

      Stimulation of B, receptors in ventricular muscle

    • G. 

      Inhibition of al receptors in ventricular muscle

    • H. 

      Stimulation of a l receptors in the SA node

    • I. 

      Inhibition of a l receptors in the SA node

    • J. 

      Inhibition of a l receptors on vascular smooth muscle

    • K. 

      Stimulation of a l receptors on vascular smooth muscle

    • L. 

      Stimulation of a 2 receptors on vascular smooth muscle

  • 17. 
    Which autonomic receptor is blocked by hexamethonium at the ganglia, but not at the neuromuscular junction?
    • A. 

      Adrenergic a receptors

    • B. 

      Adrenergic pi receptors

    • C. 

      Adrenergic P2 receptors

    • D. 

      Cholinergic muscarinic receptors

    • E. 

      Cholinergic nicotinic receptors

Back to Top Back to top