Ch. 7.7 Key Terms
what is aqueous humor?
a clear, watery fluid that fills the space between the cornea and iris
what is conjunctiva?
a mucous membrane lines the eyelids and covers the front of the eye to provide additional protection and lubrication
what is organ of corti?
transmits the impulses from sound waves to the auditory nerve.
what is Retina?
The innermost layer of the eye
what is vitreous humor?
a jellylike substance that fills the area behind the lens
what is auditory canal?
the pinna is elastic cartilage covered by the skin, leading to a canal, or tube
what is Cornea?
a circular, transparent part of the eye of the sclera
what is Ossicles?
the malleus, the incus, and the stapes.
what is Sclera?
the outermost layer is the tough connective tissue
what is Auricle?
the outer ear contains the visible part of the ear
what is eustachian tube?
The middle ear is connected to the pharynx, or throat, by a tube
what is Pinna?
the outer ear contains the visible part of the ear
what is semicircular canals?
located in the inner ear.
what is choroid coat?
the middle layer of the eye
what is lacrimal glands?
produce tears, which constantly moisten and cleanse the eye
what is Pupil?
The opening in the center of the iris
what is tympanic membrane?
Sound waves travel through the auditory canal until they reach the eardrum,
what is Cochlea?
shaped like a snail's shell, contains delicate, hairlike mechanoreceptor cells, which compose the organ of Corti, a receptor of sound waves.
what is Lens?
a circular structure located behind the pupil and suspended in position by ligaments
what is Refracts?
(bends) light rays so the rays focus on the retina
what is Vestibule?
acts as the entrance to the two other parts of the inner ear.