chaoter 8 Flashcards
what percent of all sensory receptors are in the eye
70
how many nerve fibers in eye
over a million
the eye is enclosed in
bony orbit
what surrounds the eye
cushion of fat
membrane that lines the eyelids and connects to the surface of the eye
conjuctiva
accessory if the eye
eyelids
eyelashes
conjuctivqa
lacrimal appartus
lacrimal gland
PRODUCES LACRIMAL FLUID
lacrimal cananls
drain fluid in eye
lacrimal sac
provides passage of fluid to nasal cavity
nassolacrimal
empties fluid in nsal cavity
lactimal fluid contains
antibodies and lysoszymes
wall has three tunics
fibrous]choroid
sensory
fibrous
outide
chorioid
middle
sensory
inside
scelera
white connective tissue white part of eye
cornea
transparent allows light to pass repairs itself easily
can be transplanted without fear of regecion
chorioid
blood rich nutritive
pgment prevents light scateerring
choriod constits of
ciliary
iris
puoil
ciliary body
contorls thickness focus
iris
eye color
pupil
rounded opening in irirs
rods
dim perphial
CONES
COLOR dense
males
colorblind
biconvex crystal like strructue
lwens
vitreous humor
GEL LIKE STRUCTURE NEHIND LENS keeps eye from collapsing
myopia
near sighted
hyopia
faer sighted
astigmatisim
different focal points really blind
gustory
taste bud
ceruminous
wax
middlwe ear
air
auditory tube
middle to throat
bones
mallelus
incus
stapes