Ch. 7.7 Special Senses Key Terms
a clear, watery fluid that fills the space between the cornea and iris
What is aqueous fluid?
a mucous membrane that lines the eyelids and the surface of the eye to provide protection and lubrication
What is conjunctiva?
a circular structure located behind the pupil, refracts light rays to focus on the retina
What is the lens?
another word for bends(typically light)
What is refracts?
acts as the entrance to the two other parts of the ear
What is the vestibule?
a canal in the ear
What is the auditory canal?
circular, transparent part of the front of the sclera, allows light to pass through the eye
What is the cornea?
a receptor of sound waves, transmits the sound waves to the auditory nerve
What is the organ of corti
innermost layer of the eye, made of many layers of nerve cells
What is the retina?
a jellylike substance that fills the area behind the lens, helps maintain the shape of the eyeball
What is the vitreous humor?
another word for “pinna”
What is an auricle?
connects the middle ear to the throat, allows air to enter the ear and helps equalize air pressure on both sides of the tympanic membrane
What is the eustachian tube?
three small bones(malleus, incus, and stapes) that are connected and transmit sound waves from the tympanic membrane to the inner ear
What are ossicles?
the outermost layer of tough connective tissue in the eye
What is the sclera?
a mucous membrane that lines the eyelids and the surface of the eye to provide protection and lubrication
What is conjunctiva?
the middle layer of the eye, which is interlaced with many blood vessels that nourish the eyes
What is the choroid coat?
the colored portion of the eye, contains two muscles which control the size of the pupil and control how much light enters the eye
What is the iris?
the more visible part of the ear, elastic cartilage covered by skin another word for “auricle”
What is the pinna?
contain liquid and delicate hairlike cells that bend when the liquid moves with head and body movements
What are semicircular canals?
a receptor of sound waves, transmits the sound waves to the auditory nerve
What is the organ of corti?
the snail shaped part of the ear which holds the Corti organ, a receptor of sound waves
What is the cochlea?
produce tears in the eyes
What are lacrimal glands?
opening in the center of the iris
What is the pupil?
the eardrum, separates the outer ear from the middle ear
What is the tympanic membrane?
contain liquid and delicate hairlike cells that bend when the liquid moves with head and body movements
What are semicircular canals?