Ch. 7.7 Special Senses Key Terms
What's vitreous humor?
Jellylike substance, behind lens, maintains shape, refracts light.
What's vestibule?
Inner ear, entrance, cochlea, semicircular canals.
What's tympanic membrane?
Eardrum, separates outer/middle ear, vibrates, transmits sound.
What's semicircular canals?
Inner ear, liquid, cells, balance, equilibrium.
What's sclera?
Outermost layer, "white" of the eye, maintains shape.
What's refracts?
Bends, light rays, focus.
What's pupil?
Opening, center of iris, light entry.
What's pinna?
Visible ear, outer ear, auricle.
What's ossicles?
Three small bones, middle ear, transmit sound.
What's organ of corti?
In the cochlea, receptor of sound, transmits impulses.
What's lens?
Behind pupil, refracts light, focuses on retina.
What's lacrimal glands?
Glands, produce tears, moisten, cleanse.
What's Iris?
Colored portion, controls pupil size, regulates light.
What's eustachian tube?
Connects middle ear to pharynx, equalizes air pressure.
What's cornea?
Transparent, front of sclera, allows light entry.
What's conjuctiva?
Mucous membrane, lines eyelids, protection, lubrication.
What's cochlea?
Inner ear, snail-shaped, organ of Corti.
What's choroid coat?
Middle layer, blood vessels, nourishes eyes.
What's auricle?
Visible ear, outer ear, pinna.
What's auditory canal?
Outer ear, tube, canal, sound waves.
What's aqueous humor?
Fluid, between cornea and iris, maintains curvature, refracts light.