Neurology Quiz #5 Cells of the Central and Peripheral Nervous System

1. A 25-year-old man comes to the physician because of difficulty moving his left arm and leg for the past day. A brain MRI shows a small area of infarction in the right cerebral hemisphere. Which of the following types of cells is most likely responsible for the formation of the myelin sheath in the affected area? 

Question 1 of 5

2. A researcher is studying a type of cell in the peripheral nervous system that aids in the repair process after nerve injury by forming a regeneration tube that guides the growth of the axon to its target cells. This cell type is best described as which of the following? 

Question 2 of 5

3. A 30-year-old woman presents with muscle weakness and visual disturbances. MRI and further diagnostic tests reveal multiple sclerosis (MS), a condition characterized by the loss of myelin in the central nervous system. Which of the following cell types is primarily targeted in this pathological condition? 

Question 3 of 5

4. Which of the following cells of the central nervous system is most directly involved in the removal of debris and dead neurons following an ischemic stroke? 

Question 4 of 5

5. A 40-year-old patient with a history of alcohol abuse presents with memory loss and confusion. Physical examination reveals an unsteady gait and abnormal eye movements. A deficiency in which of the following vitamins is most likely responsible for damaging the astrocytes, contributing to the patient's condition? 

Question 5 of 5


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