Ch. 7.7 Special Senses Key Terms
What is aqueous humor?
aqueous humor is a clear, watery fluid that fills the space between the cornea and iris.
What is conjunctiva?
A mucous membrane, called the conjunctiva, lines the eyelids and covers the front of the eye to provide additional protection and lubrication.
What is lens?
lens is a circular structure located behind the pupil and suspended in position by ligaments. It refracts (bends) light rays so the rays focus on the retina.
What is refracts?
refracts (bends)
What is vestibule?
vestibule, which acts as the entrance to the two other parts of the inner ear.
What is auditory canal?
a tube-like passage that connects the outer ear to the eardrum, collecting and directing sound waves inward to begin the hearing process.
What is cornea?
cornea is a circular, transparent part of the front of the sclera.
What is organ of corti?
organ of Corti, a receptor of sound waves. The organ of Corti transmits the impulses from sound waves to the auditory nerve.
What is retina?
The innermost layer of the eye is the retina.
What is vitreous humor?
vitreous humor is the jellylike substance that fills the area behind the lens.
What is auricle?
The outer ear contains the visible part of the ear
What is eustachian tube?
throat, by a tube called the eustachian tube.
What is ossicles?
small bones (ossicles)
What is sclera?
The sclera maintains the shape of the eye.
What is choroid coat?
The middle layer of the eye, the choroid coat
What is iris?
iris is the colored portion of the eye.
What is pinna?
pinna is elastic cartilage covered by skin.
What is semicircular canals?
Semicircular canals are also located in the inner ear. These canals contain a liquid and delicate, hairlike cells that bend when the liquid moves with head and body movements.
What is cochlea?
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 lacrimal glands?
Lacrimal glands in the eye produce tears, which constantly moisten and cleanse the eye.
What is pupil?
The opening in the center of the iris is called the pupil.
What is tympanic membrane?
a thin membrane that separates the outer ear from the middle ear