Anatomy Eye and Ear Functions

Pupil

allows light to enter eye

iris

Regulates pupil size

lens

light refraction(inner part of the eye)

cornea

light refraction(outer part of the eye)

sclera

part of the fibrous tunic

choroid

part of the vascular tunic

retina

part of the sensory tunic

ciliary body

changes shape of lens

lacrimal gland

releases lacrimal(tears) fluid from its excretory ducts

posterior cavity with vitreous humor

maintains intraocular pressure + liquid

anterior cavity of eye

separates lens and cornea

anterior chamber with aqueous humor

lies between iris and lens & has fluid with maintains intraocular pressure

optic nerve of eye

transmits visual info from retina to brain

rods and cones of eye

photoreceptor cells

image on the right

auricle

collects sound waves

external acoustic meatus

passageway for sound waves

tympanic membrane

transmits sound waves from middle ear to inner ear

auditory tube

equalizes air pressure

cochlea

hearing

stapes

transmits vibrations

incus

transmits vibrations

malleus

transmits vibrations

vestibular membrane

transmits vibrations

tectorial membrane

transmits vibrations

semicircular ducts

equilibrium/balance

utricle

equilibrium/balance

saccule

equilibrium/balance

vestibule

equilibrium/balance

vestibulocochlear nerve

balance and hearing

oval window

where stapes meets the inner ear

organ of Corti

hair cells located in the cochlea that capture vibrations and send to afferent neuron