A 65-year-old man is being evaluated after a spinal cord inj…
A 65-year-old man is being evaluated after a spinal cord injury. He reports that he cannot feel vibration or joint position on the right side of his body below the level of the injury, but pain and temperature sensation are normal. Based on your knowledge of sensory pathways, where is the most likely location of the spinal cord injury? (Hint where does this tract cross?)
Read DetailsWhich of the following cerebellar regions is primarily respo…
Which of the following cerebellar regions is primarily responsible for coordinating distal voluntary limb movements, especially during fine motor tasks such as writing or playing an instrument? (Hint: what part is responsible for planning and timing of movements?)
Read DetailsA 64-year-old woman presents with weakness in her right arm…
A 64-year-old woman presents with weakness in her right arm and leg, and nonfluent, effortful speech. She can follow verbal commands and understands language well. MRI reveals a stroke in the precentral gyrus and adjacent cortex anterior to the central sulcus in the left cerebral hemisphere. Which of the following structures is most directly responsible for the motor deficits? (Hint: read the question carefully Right sided weakness corresponds to which side? Note how the speech deficits are described)
Read DetailsA 58-year-old woman presents with loss of pain and temperatu…
A 58-year-old woman presents with loss of pain and temperature sensation on the left side of her body, beginning around the level of her umbilicus. Motor strength and vibration sense are intact. The neurologist suspects a spinal cord lesion. Where is the lesion most likely located? (Hint: The umbilicus (belly button) is found in the thoracic region. Where do afferent pain and temperature neurons cross ?)
Read Details