Neurology is the branch of medicine concerned with the study and treatment of disorders of the nervous system. The nervous system is a complex, sophisticated system that regulates and coordinates body activities. It has two major divisions: Central nervous system: the brain and spinal cord. This is a neurology quiz Even the best Neurologists cannot crack! ALL THE BEST!
45
5
2
76
60%
20%
75%
45%
Amacrine > ganglion > bipolar > photorecepotors
Ganglion > amacrine > bipolar > horizontal
Amacrine > ganglion > horizontal > photoreceptors
Amacrine > bipolar > ganglion > photoreceptors
L cones
M cone
S cone
Rods
2, 5, 1, 3, 4, 6
1, 2, 3, 4, 5, 6
3, 2, 1, 4, 6, 5
2, 5, 3, 1, 4, 6
50
25
80
75
High [Na+]
low [Na+]
High [K+]
Low [K+]
Cilium consists of 9 double microtubules that aid in the transportation of ions and newly made proteins
Ciulium consists of 9 double microfilaments that aid in the transportation of ions and newly made proteins
Cilium consists of 9 double microtubules that aid in the removal of discs at the end of their life cycle
The cilium is a performs motor function to aid the photoreceptor in motility
Cone inner segment diameter increases with increasing eccentricity
You would find no cones in the periphery
Rods increase in population eccentrically
Muller's cells
Oligodendrocytes
Type I astrocyte
Type II astrocyte
Type III astrocyte
Oligodendrocytes
Astrocytes
Photoreceptors
Muller cells
Ganglion cells
Help hold blood vessels in place
Control blood flow out of vessels
Form the blood brain barrier
Provide myelination to RGC axons
Allows rods to have an expanded range of response capabilities under different lighting conditions
Allows rods to have one uniform response to all light levels
Allows for cones to have isolated pathways without input from rods
I dont know, they just do!
Rod --> rod ON bipolar cell --> A2 amacrine cell --> cone ON bipolar cell --> On ganglion cell
Rod --> rod bipolar cell --> A2 amacrine cell ---> cone OFF gc via glycine synapse
Rod ---> cone (gap junction) ---> on and off bipolar cell ---> on and off ganglion cell
Rod --> off cone bipolar cell --> off cone ganglion cell
Rod ---> OFF rod bipolar cell --> A2 amacrine cell --> OFF rod ganglion cell
Horizontal cell bodies
Photoreceptor cell bodies
Amacrine cell bodies
Interplexiform cell bodies
H1
H2
Biplexiform-GC
Alpha-GC
Beta-GC
Gamma-GC
ON - rod ganglion cell
Horizontal cells
Ganglion cells
Photoreceptors
Bipolar cells
Biplexiform cell s
50%
25%
33%
90%
Interplexiform neurons
Ganglion cells
Amacrine cells
Horizontal cells
Increased receptive field size
Decreased receptive field size
29
14
20
24
19
Horizontal cell <--> midget bipolar cell
Horizontal cell <--> Horizontal cell
Cone <--> midget bipolar cell
Cone<--> flate bipolar cell
Synaptic lamellae
Arciform density
Arciform lamellae
Synaptic density
2
1
3
None rods don't have spherules
Wait!
Here's an interesting quiz for you.