Facial Weakness: Peripheral vs Central Lesion
16 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What can result in facial weakness or paralysis?

  • A peripheral lesion of CN VII
  • A peripheral lesion of CN VIII
  • A central lesion involving the upper motor neuron system
  • Both a peripheral and central lesion (correct)
  • Where can a peripheral lesion of CN VII occur?

  • Only in the pons
  • Anywhere from its origin in the pons to its periphery in the face (correct)
  • Only in the face
  • Only in the cortex
  • How is a central lesion involving the upper motor neuron system different from a peripheral lesion?

  • It affects only the lower portion of the face
  • It paralyzes the entire face on one side
  • It weakens the right lower face but preserves function in the upper face (correct)
  • It weakens the left lower face but preserves function in the upper face
  • What happens to the upper portion of the face in a central nerve damage to CN VII?

    <p>It continues to function fairly well</p> Signup and view all the answers

    What effect does peripheral nerve damage to CN VII have on the forehead?

    <p>It paralyzes the forehead</p> Signup and view all the answers

    How is left hemispheric damage to upper motor neurons different from right hemispheric damage?

    <p>It weakens only the lower portion of the face on one side</p> Signup and view all the answers

    Which type of muscle tone is rate-dependent, increasing with rapid passive movement and decreasing with slow passive movement?

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

    What is the term for the increased resistance that persists throughout the movement arc, independent of the rate of movement?

    <p>Lead-pipe rigidity</p> Signup and view all the answers

    Which condition is characterized by loss of muscle tone causing the limb to be loose or floppy?

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

    What term is used for a superimposed ratchet-like jerkiness during flexion and extension of the wrist or forearm?

    <p>Cogwheel rigidity</p> Signup and view all the answers

    Sudden changes in tone accompanying passive range of motion include sudden loss of tone that increases the ease of motion, known as:

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

    Where is the location of lesion associated with disorders of muscle tone such as spasticity, rigidity, and flaccidity?

    <p>Motor cortex</p> Signup and view all the answers

    What condition is characterized by sudden increase in tone making motion more difficult?

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

    Which disease is a common cause of spasticity, rigidity, and flaccidity?

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

    What condition causes the affected limbs to be hyperextensible or even flail-like?

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

    What is the term used for initial hypertonia giving way suddenly as the limb relaxes during rapid passive movement?

    <p>Clasp-knife resistance</p> Signup and view all the answers

    More Like This

    Bell's Palsy vs. Stroke Quiz
    13 questions

    Bell's Palsy vs. Stroke Quiz

    SteadiestDalmatianJasper avatar
    SteadiestDalmatianJasper
    Use Quizgecko on...
    Browser
    Browser