Neurology: Brown-Séquard Syndrome and Sensory Pathways
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Questions and Answers

Which syndrome is characterized by ipsilateral reduction of discriminative, positional, and vibratory tactile sensations?

  • Brown-Séquard syndrome (correct)
  • Cerebellar ataxia
  • Tabes dorsalis
  • Proprioceptive disorder

Which structure is responsible for transmitting proprioceptive information from the spinal cord to the cerebellum?

  • Dorsal gray horn
  • Medial lemniscus
  • Postcentral gyrus
  • Spinocerebellar pathways (correct)

What is the primary function of proprioception?

  • Perception of joint angles and muscle tension (correct)
  • Transmission of visual information
  • Transmission of pain sensations
  • Regulation of body temperature

Which cortical area is responsible for processing somatosensory information?

<p>Primary somatosensory cortex (A)</p> Signup and view all the answers

What is the result of degeneration of the spinocerebellar tracts?

<p>Cerebellar ataxia (A)</p> Signup and view all the answers

Which spinocerebellar pathway transmits proprioceptive information from the lower back?

<p>L3-L5 spinocerebellar tract (B)</p> Signup and view all the answers

What is the primary function of the posterior column-medial lemniscus pathway in the somatosensory system?

<p>Discriminating size, shape, and texture, as well as recognizing 3D shapes (A)</p> Signup and view all the answers

Which of the following is NOT a characteristic of the posterior column-medial lemniscus system?

<p>Slow conduction velocity (C)</p> Signup and view all the answers

What is the primary function of the spinocerebellar pathways in the somatosensory system?

<p>Regulating limb movement and kinesthesia (B)</p> Signup and view all the answers

What is the term for the conscious awareness of body position in space?

<p>Proprioception (B)</p> Signup and view all the answers

What is the term for the ability to recognize 3D shapes by touch?

<p>Stereognosis (A)</p> Signup and view all the answers

What is the primary function of the Anterolateral System (ALS)?

<p>Nondiscriminative touch, innocuous thermal, and nociceptive sensations (B)</p> Signup and view all the answers

Which type of fibers are responsible for transmitting nociceptive stimuli in the Anterolateral System?

<p>Aδ fibers (A)</p> Signup and view all the answers

What is the function of the VPL (Ventral Posterolateral) nucleus in the thalamus?

<p>Rapid and precise localization of nociceptive stimuli (A)</p> Signup and view all the answers

Which type of receptors are responsible for monitoring the functions of visceral structures continuously?

<p>Physiologic receptors (C)</p> Signup and view all the answers

What is the phenomenon where noxious stimuli from a visceral structure are perceived as pain arising from a somatic location?

<p>Referred pain (D)</p> Signup and view all the answers

What is the theory that describes the local modulation of nociceptive processing in the spinal cord?

<p>Gate control theory (B)</p> Signup and view all the answers

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