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Questions and Answers
What can result in facial weakness or paralysis?
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?
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?
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?
What happens to the upper portion of the face in a central nerve damage to CN VII?
What effect does peripheral nerve damage to CN VII have on the forehead?
What effect does peripheral nerve damage to CN VII have on the forehead?
How is left hemispheric damage to upper motor neurons different from right hemispheric damage?
How is left hemispheric damage to upper motor neurons different from right hemispheric damage?
Which type of muscle tone is rate-dependent, increasing with rapid passive movement and decreasing with slow passive movement?
Which type of muscle tone is rate-dependent, increasing with rapid passive movement and decreasing with slow passive movement?
What is the term for the increased resistance that persists throughout the movement arc, independent of the rate of movement?
What is the term for the increased resistance that persists throughout the movement arc, independent of the rate of movement?
Which condition is characterized by loss of muscle tone causing the limb to be loose or floppy?
Which condition is characterized by loss of muscle tone causing the limb to be loose or floppy?
What term is used for a superimposed ratchet-like jerkiness during flexion and extension of the wrist or forearm?
What term is used for a superimposed ratchet-like jerkiness during flexion and extension of the wrist or forearm?
Sudden changes in tone accompanying passive range of motion include sudden loss of tone that increases the ease of motion, known as:
Sudden changes in tone accompanying passive range of motion include sudden loss of tone that increases the ease of motion, known as:
Where is the location of lesion associated with disorders of muscle tone such as spasticity, rigidity, and flaccidity?
Where is the location of lesion associated with disorders of muscle tone such as spasticity, rigidity, and flaccidity?
What condition is characterized by sudden increase in tone making motion more difficult?
What condition is characterized by sudden increase in tone making motion more difficult?
Which disease is a common cause of spasticity, rigidity, and flaccidity?
Which disease is a common cause of spasticity, rigidity, and flaccidity?
What condition causes the affected limbs to be hyperextensible or even flail-like?
What condition causes the affected limbs to be hyperextensible or even flail-like?
What is the term used for initial hypertonia giving way suddenly as the limb relaxes during rapid passive movement?
What is the term used for initial hypertonia giving way suddenly as the limb relaxes during rapid passive movement?
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