Ch. 7.7 Special Senses Key Terms
What is aqueous humor?
a clear, watery fluid that fills the space between the cornea and iris.
What is conjunctiva ?
Lines the eyelids and covers the front of the eye to provide additional protection and lubrication.
What is lens?
A circular structure located behind the pupil.
What is refracts?
Bends
What is sclera?
The outermost layer of the tough connective tissue.
What is auditory canal?
Special glands in this canal produce cerumen, a wax that protects the ear.
What is the cornea?
A circular, transparent part of the front of the sclera.
What is the organ of corti?
A receptor of sound waves
What is retina?
Innermost layer of the eye
What is semicircular canals?
Contain a liquid and delicate, hairlike cells that bend when the liquid moves with head and body movements.
What is auricle?
An elastic cartilage covered by skin.
What is eustachian tube?
Allows air to enter the middle ear and helps equalize air pressure on both sides of the tympanic membrane.
What is ossicles?
Refers to the three small bones in the middle ear.
What is tympanic membrane?
Separates the outer ear from the middle ear.
Acts as the entrance to the two other parts of the inner ear.
What is choroid coat?
The middle layer of the eye.
What is iris?
The colored portion of the eye.
What is pinna?
An elastic cartilage covered by skin.
What is vitreous humor?
The jelly-like substance that fills the area behind the lens.
What is cochlea?
Composes the organ of Corti
What is lacrimal glands?
Produces tears
What is a pupil?
Opening in the center of the iris