Central Nervous System Functions and Components
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Questions and Answers

Which disease is characterized by hyporeflexia and muscle atrophy?

  • Multiple sclerosis
  • Amyotrophic lateral sclerosis (ALS) (correct)
  • Stroke (cerebrovascular accident)
  • Poliomyelitis

    • Which disease is characterized by spasticity and exaggerated reflexes?

  • Spinal muscular atrophy
  • Amyotrophic lateral sclerosis (ALS)
  • Stroke (cerebrovascular accident) (correct)
  • Poliomyelitis

    • Where are Lower Motor Neuron (LMN) lesions located?

  • At the level of the brainstem
  • In the brain or descending pathways
  • Above the level of the spinal cord
  • At or below the level of the spinal cord (correct)

    • Where are Upper Motor Neuron (UMN) lesions located?

    <p>In the brain or descending pathways</p> Signup and view all the answers

    What is a distinctive feature of Lower Motor Neuron (LMN) lesions?

    <p>Direct effects on muscles and reflexes</p> Signup and view all the answers

    What is a distinctive feature of Upper Motor Neuron (UMN) lesions?

    <p>Indirect effects on muscle activity and reflexes</p> Signup and view all the answers

    Which disease is characterized by muscle weakness, fasciculations, and fibrillations?

    <p>Amyotrophic lateral sclerosis (ALS)</p> Signup and view all the answers

    Which disease is characterized by weakness or paralysis usually on one side of the body?

    <p>Stroke (cerebrovascular accident)</p> Signup and view all the answers

    Which part of the central nervous system regulates motor activities?

    <p>Brain</p> Signup and view all the answers

    What is the function of the spinal cord in the central nervous system?

    <p>Facilitates communication between the brain and peripheral nerves</p> Signup and view all the answers

    Which process involves sensory receptors detecting stimuli and transmitting signals to the spinal cord or brain?

    <p>Afferent (Sensory) Neural Transmission</p> Signup and view all the answers

    What is the function of efferent (motor) neural transmission?

    <p>Initiate and control voluntary movements</p> Signup and view all the answers

    What part of the nervous system carries motor commands to lower motor neurons?

    <p>Descending pathways</p> Signup and view all the answers

    What is the primary function of ascending pathways in neural transmission?

    <p>Carry sensory information to higher brain centers</p> Signup and view all the answers

    What part of the central nervous system mediates reflexes?

    <p>Spinal Cord</p> Signup and view all the answers

    What part of the central nervous system coordinates sensory information?

    <p>Cerebellum</p> Signup and view all the answers

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