Following the death of a patient with Alzheimer's disease, a neuropathologist examines several of her brain sections under the microscope. He notes a change in the cytoskeleton of several neurons. What is the most likely cause of this change?
A) Accumulation of tau protein B) Macrophage accumulation C) Increased synaptic activity D) Depletion of collagen fibers E) Protein depolymerization
What is the difference in myelination of axons by Schwann cells versus myelination by oligodendrocytes?
A) Schwann cells myelinate axons in the central nervous system B) Schwann cells myelinate multiple axons C) Oligodendrocytes myelinate axons in the peripheral nervous system D) Oligodendrocytes myelinate multiple axons
A 45-year-old woman is diagnosed with a disease that causes degeneration of neurons directly connecting photoreceptors to ganglion cells in the retina. Which of the following represents this cell type?
A) Multipolar cells B) Pseudounipolar cells C) Unipolar cells D) Pyramidal cells E) Bipolar cells