Eye Flashcards
Rod cells
higher in number
lower acuity
peripheral retina- decrease in number towards the macula
Cone cells
lower in number
higher acuity
only in fovea- most dense in macula
where are rod and cone cells found?
above the pigmented layer (??????)
what is the optic disc?
raised bit of retina where optic nerve enters = blind spot
what is the sac called above the chochlear duct?
scala vestibuli
what is the sac called below the chochlear duct?
scala tympani
what separates the cochlear duct and the scala vestibuli?
vestibular membrane
what separates the cochlear duct and the scala tympani?
basilar membrane
what membrane lies on top of hair cells?
tectoral membrane
what is more superior utricle or sacule?
utricle
what is found in the urricle and sacule?
maculae- vestibular receptors involved in balance and position of head
what is found in the semicircular ducts in the ampulla?
christae ampullaris- vestibular receptors involved in rate and change of head movement