Visual System Flashcards
The axons in the optic tract terminate in which nuclei in the brain?
lateral geniculate nucleus, superior colliculus, pretectum, and suprachiasmatic nucleus of the hypothalamus?
What is the function of the LGN?
visual perception
What is the function of the superior colliculus?
orienting movements of head and eyes
What is the function of the pretectum?
reflex control of pupillary light reflex
What is the function of the suprachiasmatic nucleus?
control of diurnal rhythms and hormonal changes
The eye forms as an outpocket of the __________.
diencephalon
Why are photoreceptor cells positioned close to the vasculature?
They have high energy demands and are constantly active.
With regard to optic radiations, where are upper fibers vs. lower fibers sent?
upper fibers via parietal lobe; lower fibers via temporal lobe (Meyer’s loop)
Where is the fusiform face area (FFA) located?
the inferior temporal cortex in the fusiform gyrus (Brodmann area 37)
Horner’s syndrome causes ptosis, meiosis, and anhidrosis _______ to the lesion.
ipsilateral
