Download CHARTS FOR VISUAL PATHWAYS Visual Pathway Cell Body

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CHARTS FOR VISUAL PATHWAYS
Visual Pathway
1°
2°
3°
Cell Body/Nucleus
Rod/cone
Bipolar cell
Ganglion cell
4°
termination
LGN
Visual cortex
Pupillary Constriction
1°
2°
3°
Cell Body/Nucleus
Rod/cone
Bipolar cell
Ganglion cell
4°
Pretectal area
Tract
Optic nerve – optic chiasm –
optic tract
Optic radiations
5°
Edinger Westfall nucleus
6°
Ciliary Ganglion
Termination – pupillary sphincter
Accommodation
1°
2°
3°
Cell Body/Nucleus
Rod/cone
Bipolar cell
Ganglion cell
Pupillary Dilation
1°
Cell Body/Nucleus
Hypothalamus
Tract
Optic nerve – optic chiasm –
optic tract – brachium of
superior colliculus
Note: crossing axons in
posterior commissure
CN III
short ciliary nerves
Tract
Optic nerve – optic chiasm –
optic tract
4°
LGN
Optic radiations
5°…
Visual cortex
Optic radiations to brachium of
superior colliculus
6° (or more)
Pretectal area
Note: crossing axons in posterior
commissure
7°
Edinger Westfall nucleus
CN III
8°
Ciliary Ganglion
short ciliary nerves
Termination – pupillary sphincter and ciliary muscle
Tract
Hypothalamospinal tract (aka
reticulospinal tract)
2°
Preganglionic sympathetic Sympathetic chain
neurons in lateral horn of
spinal cord
3°
Superior cervical ganglion Common carotid - internal
carotid – long ciliary nerves
Termination – pupillary dilator
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