Neurology: Brown-Séquard Syndrome and Sensory Pathways

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

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

Spinocerebellar pathways

What is the primary function of proprioception?

Perception of joint angles and muscle tension

Which cortical area is responsible for processing somatosensory information?

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

What is the result of degeneration of the spinocerebellar tracts?

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

Which spinocerebellar pathway transmits proprioceptive information from the lower back?

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

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

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

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

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

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

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

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

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

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