Motor Examination Practical CNS Introduction
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Questions and Answers

What is the main characteristic of Parkinson's tremor?

  • Absent at rest but maximal on movement
  • Fine (low amplitude) and fast (high frequency)
  • Worse at rest (static tremor) (correct)
  • Asymmetrical and causes a pill rolling motion

    • Which of the following is NOT a cause of physiological tremor?

  • Caffeine
  • Anxiety
  • Huntington's disease (correct)
  • Fatigue

    • Which type of tremor is assessed using the finger-to-nose test?

  • Athetosis
  • Parkinson's tremor
  • Cerebellar tremor (correct)
  • Physiological tremor

    • Which movement disorder is characterized by $uncontrolled, involuntary, brief, jerky random$ movements?

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

    Which type of gait is tested by asking the patient to walk on their tiptoes?

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

    What is the main component of the motor pathway that is responsible for transmitting voluntary movement signals from the motor cortex to the skeletal muscles?

    <p>The upper motor neuron</p> Signup and view all the answers

    Which movement disorder is caused by sustained muscle contraction, leading to twisting and repetitive movement or abnormal fixed posture?

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

    Which of the following is the most likely cause of paralysis resulting from a lesion in the motor pathway?

    <p>Damage to the upper motor neuron</p> Signup and view all the answers

    What is the main characteristic of muscle atrophy observed in a lower motor neuron lesion?

    <p>The atrophy is localized to the affected muscles</p> Signup and view all the answers

    Which of the following is the main function of the cerebellar coordination centers during voluntary movement?

    <p>To maintain balance and posture</p> Signup and view all the answers

    What is the main difference between upper motor neuron lesion (UMNL) and lower motor neuron lesion (LMNL) in terms of muscle tone and reflexes?

    <p>UMNL has increased muscle tone and exaggerated reflexes, while LMNL has decreased muscle tone and diminished reflexes</p> Signup and view all the answers

    Which of the following is the most accurate statement regarding the relationship between the extrapyramidal system and voluntary movement?

    <p>The extrapyramidal system modulates the intensity and coordination of voluntary movement</p> Signup and view all the answers

    What is the main characteristic of spasticity during passive movement?

    <p>A rapid build up in resistance during the first few degrees of passive movement, followed by a sudden lessening of resistance</p> Signup and view all the answers

    Which of the following is the main cause of spasticity?

    <p>Upper motor neuron lesion</p> Signup and view all the answers

    Which muscle groups are most affected by spasticity?

    <p>Muscles not affected by gravity</p> Signup and view all the answers

    What is the main characteristic of rigidity during passive movement?

    <p>A sustained resistance to passive movement throughout the range of movement, similar to bending a lead pipe</p> Signup and view all the answers

    Which condition is associated with rigidity?

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

    How is muscle power typically assessed?

    <p>By assessing the patient's ability to resist voluntary movement</p> Signup and view all the answers

    What is the purpose of the Heel-knee-shin test?

    <p>Detect cerebellar ataxia</p> Signup and view all the answers

    What is a common abnormality seen in the Finger-nose test?

    <p>Intention tremors</p> Signup and view all the answers

    In sensory ataxia, what is the impact of closing the patient's eyes during testing?

    <p>Apparent dysmetria and dysdiadokinesia</p> Signup and view all the answers

    Which type of ataxia results from defective proprioception?

    <p>Sensory ataxia</p> Signup and view all the answers

    What symptom is associated with dysdiadokinesia?

    <p>Irregular movements in force and rhythm</p> Signup and view all the answers

    How are abnormalities in rapid alternating movements described in cerebellar ataxia?

    <p>Irregular force and rhythm</p> Signup and view all the answers

    What is the recommended position for the subject in testing the biceps jerk?

    <p>Sitting on a chair with legs hanging freely</p> Signup and view all the answers

    Which nerve roots are primarily tested during the triceps jerk reflex?

    <p>C6, C7</p> Signup and view all the answers

    In which position should the subject be for testing the supinator (brachioradialis) jerk?

    <p>Lying down with forearm resting on the abdomen and palm down</p> Signup and view all the answers

    What is the expected response when tapping the patellar tendon below the patella during the knee jerk reflex test?

    <p>Extension at the knee</p> Signup and view all the answers

    How should the subject's arm be positioned for the triceps jerk reflex test?

    <p>Partially flexed with palm down</p> Signup and view all the answers

    Which muscle group contracts during the biceps jerk reflex test?

    <p><strong>Biceps muscle</strong></p> Signup and view all the answers

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