Various types of ____ cells refine the input to ganglion cells, enabling them to respond specifically to shapes, movement, or other visual features.
a. receptors
b. geniculate cells
c. amacrine cells
d. optic nerves
Question 2
What is believed to be the likely cause of plaques?
a. a relative deficit of thiamine
b. increased pressure from cerebrospinal fluid
c. amyloid deposits in the brain
d. a relative deficit of acetylcholine