Sclera
white portion of the fibrous layer of eye
Cornea
Cleaer portion of the fibrous outer layer of the eye
Conjunctiva
Thin membrane that covers the anterior portion of the eye
Lens
focuses light onto the retina
Choroid
contains blood vessesls to provide nourishment to the retina
Ciliary Body
muscle that pulls on the lens to bend light for near vision
Iris
Muscle that constricts or relaxes to regulate the amount of light that enters the eye
Pupil
Hole that allows light eo enter posterior portion of eye
Retina
Conatins photoreceptors
Optic Nerve
Carry visual information to the brain
Optic Disc
place where axons of ganglion cells penetrate through wall of eye
Aqueuous Humor
fluid that fills anterior portion of eye
Vitreous Humor
gel-like substance that fills the posterior portion of eye
Lacrimal Gland
Produces Tears
Auditory Tube
equalizes air pressure between the tympanic cavity and otside air pressure
Cochlea
contains spiral organ of Corti
External Auditory canal
Sound wave travels through this tunnel to cause the eardrum to vibrate
Malleus, Incus, Stapes
small bones of middle ear that conduct sound wave to inner ear
Pinna
avts like a funnel to direct sound waves into the ear
Round window
Dissipates sound wave after it travels through the cochlea
Semicircular canals & vestibule
contains sensory cells for balance
Tympanic Cavity
Air-filled cavity that houses the auditory ossicles
Tympanic Membrane
Vibrates in response to sound waves; aka the eardrum
Vestibulocochlear Nerve
conducts auditory and equilibrium info to the brain.