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Questions and Answers
Which region of the spinal cord is associated with a lesion if a patient presents with a dermatomal pattern of sensory loss in the sacral dermatome?
Which region of the spinal cord is associated with a lesion if a patient presents with a dermatomal pattern of sensory loss in the sacral dermatome?
- Cervical
- Sacral
- Lumbar (correct)
- Thoracic
What is the major arterial supply of the spinal cord?
What is the major arterial supply of the spinal cord?
- Vertebral artery
- Internal iliac artery
- Superior mesenteric artery
- Anterior spinal artery (correct)
Which structure of the spinal cord is responsible for transmitting sensory information to the brain?
Which structure of the spinal cord is responsible for transmitting sensory information to the brain?
- Dorsal root (correct)
- Ventral horn
- Dorsal horn
- Ventral root
Damage to the corticospinal tract would most likely result in which impairment?
Damage to the corticospinal tract would most likely result in which impairment?
Which ascending pathway carries information related to discriminative touch and proprioception?
Which ascending pathway carries information related to discriminative touch and proprioception?
In which descending pathway do motor fibers decussate at the medullary pyramids?
In which descending pathway do motor fibers decussate at the medullary pyramids?
Which tracts transmit sensory information from the upper body and lower body, respectively?
Which tracts transmit sensory information from the upper body and lower body, respectively?
Which pathway is responsible for contralateral hemiparesis/paralysis?
Which pathway is responsible for contralateral hemiparesis/paralysis?
Which neuron is located in the ventral horn of the spinal cord?
Which neuron is located in the ventral horn of the spinal cord?
Which sensory pathway involves the gracilis and cuneate nuclei as secondary neurons?
Which sensory pathway involves the gracilis and cuneate nuclei as secondary neurons?
Damage to which cranial nerves may result in contralateral lower facial paralysis?
Damage to which cranial nerves may result in contralateral lower facial paralysis?
Which motor tract originates from the motor cortex in Brodmann area 4?
Which motor tract originates from the motor cortex in Brodmann area 4?
Which of the following best describes the clinical features associated with a herniated lumbar nucleus pulposus affecting the L5-S1 disc?
Which of the following best describes the clinical features associated with a herniated lumbar nucleus pulposus affecting the L5-S1 disc?
In a spinal cord lesion affecting the lumbar region, what motor function may be impacted leading to difficulty walking on heels?
In a spinal cord lesion affecting the lumbar region, what motor function may be impacted leading to difficulty walking on heels?
Which of the following regions is innervated by the first sacral nerve root?
Which of the following regions is innervated by the first sacral nerve root?
Which of the following is a common clinical feature in herniated lumbar nucleus pulposus that affects the L5 nerve root?
Which of the following is a common clinical feature in herniated lumbar nucleus pulposus that affects the L5 nerve root?
Which of the following sensory tracts is responsible for transmitting sensations of fine touch and vibration?
Which of the following sensory tracts is responsible for transmitting sensations of fine touch and vibration?
In a spinal cord lesion affecting the lumbar region, which reflex may be diminished or absent?
In a spinal cord lesion affecting the lumbar region, which reflex may be diminished or absent?
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