lab 8: visual , auditory and vestibualr systems Flashcards
what is the function and innervation of the superior rectus
elevate the eyes , causes cornea to move superiorly
CN3
what is the function and innervation for the inferior rectus
depresses the eyes , causes the cornea and the pupil to move inferiorly
CN 3
what is the function and innervation of the medial rectus
adduction of the eye
CN 3
what is the function and innervation of the laterla rectus
moves eye laterally and CN 6
what is the function and innervation of the superior oblique
rotates the eyes downward and away from midline
CN 4
what is the function of the inferior oblique
elevation , abduction and extorsion of the eye
what would happen if CN 3, 4 , and 6 has lesion
paralysis of the eye
where is the optic nerve
from eyeball to optic chiasm
where is the optic tract
after chiasm to nucleus
what is the function of the optic chiasm
allows the visual cortex to receive the same hemispheric visual field from both eyes
what is the function of the hypothalamus related to vision
controls sympathetic nervous system ( pupil dilation) and parasympathetic nervous system (pupil constriction)
what is the function of the thalamus related to vision
the lateral geniculate nucleus plays an essential role in normal visual processing
what is the function of the superior colliculus
integrates visual , auditory and somatosensory information to initiate orienting movements of eyes and head toward objects
what is the function of the pretectum
controls pupillary light reflex
what is the function for the primary visual cortex
receives visual information from retinas
what is the function of the calcarine fissure
divides the upper and lower visual fields
what is the function of the cuneus (upper bank)
receives visual info from the lower eyes fields
what is the function of the lingual
receives information from the superior eye fields
what is the function of the parieto-occipital sulcus
provides a landmark for defining the location of the primary visual cortex
what’s is the function of the CN 3
movement of eyeball
pupillary contraction and accommodation
what is the function of CN 4
rotates the eyes downward and way from midline
what is the function of CN 6
moves the eye laterally