General Flashcards
Where does the right visual field project to
Left side of cortex
Where does the left visual field project to
Right side of cortex
What is the route of the left temporal fibres
Left temporal fibres go down the optic nerve
Through optic chiasm
Travel in ipsilateral optic tract
To lateral geniculate nucleus
Where they synapse and project to primary visual cortex
What is the route of right nasal fibres
Go down optic nerve Through optic chiasm Travel in contralateral optic tract Synapse in lateral geniculate nucleus Project to primary visual cortex
What info does the upper retina fibres contain
Info about the lower visual field
What info does the lower retina fibres contain
Info about upper visual field
What is meyers loop
Fibres in lower retina travel along optic nerve and tract to lateral geniculate nucleus where they synapse and project to primary visual cortex
But the path to the cortex is blocked by the inferior horn of the lateral ventricle so they have to move around the horn
What makes the optic nerve a not true peripheral nerve
Contains astrocytes and oligodendrocytes
Cannot regenerate
What does the left optic tract carry
Info from right visual field
What does the right optic tract carry
Info from left visual field
Where else does the optic tract synapse
At the superior colliculi
Where do superior colliculi fibres project to
Brainstem
Which tract originates at the superior colliculi
Tectospinal tract
