The optic nerve is composed of axons from which kind of cell?
a. rods and cones
b. bipolar cells
c. horizontal cells
d. ganglion cells
Question 2
Most researchers now believe that the accumulation of amyloid and tau protein ____.
a. is a result of the Alzheimer's disease
b. are partly the cause of Alzheimer's disease
c. are byproducts of acetylcholine
d. are byproducts of dying glial cells