Russell is 72 years old and is still working part-time as a professor. he has noticed some arm and hand shaking in the past year, but assumed it must be related to low or high blood sugar levels because he has had some issues with that in the past. however, the shaking/twitching has become more consistent lately and does not seem to be correlated with his diet. russell’s doctor said that the stress of his job could be the problem, so he took the entire summer off from teaching. when he returned to work in the fall, russell and his students noticed that his handwriting has become nearly illegible. drinking a cup of coffee without spilling had also become a challenge. russell returned to his doctor, who performed a physical exam and a few tests. here are the notable results: shuffling gait, mild bradykinesia, mild voice tremor, intermittent rigidity of the limbs, and normal eeg.1.if russell is having symptoms in his upper extremities, lower extremities, and his speech is slurred, which of the following body regions is most likely experiencing a pathology? a. spinal nervesb. brain and spinal cordc. peripheral nervesd. cranial nerves2.shuffling gait is often associated with parkinson’s disease. which of these symptoms is not another common sign of parkinson’s disease? a. bradykinesiab. rigidityc. babinski reflexd. facial masking3.russell’s physician decides to follow-up with an mri. if he does have parkinson’s disease, his mri may show degeneration in which part of the brain? a. corpus callosumb. substantia nigrac. wernicke’s aread. frontal lobe4.which of the following is not a treatment option for parkinson’s disease? a. deep brain stimulationb. radiationc. levodopad. antidepressant medications5.which of the following statements is true regarding parkinson’s disease? a. brain imaging typically shows degeneration of neurons in the temporal lobe. b. the loss of neurons is often accompanied by the necrosis of astrocytes and an increase in microglia. c. it is possible to reverse the effects of parkinson’s disease. d. parkinson’s disease is typically diagnosed before 40 years of age.