Outer eye/protection
These glands produce tears, which constantly moisten and cleanse the eye.
What are Lacrimal Glands?
The opening in the center of the iris that allows light to enter the lens.
What is the Pupil?
Another term for the auricle, the external, visible part of the ear.
What is the Pinna?
Shaped like a snail shell, this structure in the inner ear contains the Organ of Corti and is responsible for hearing.
What is the Cochlea?
These three loops in the inner ear help maintain a sense of balance and equilibrium.
What are the Semicircular Canals?
This membrane lines the eyelid and covers the front of the eye to provide additional protection and lubrication.
What is the Conjunctiva?
The colored portion of the eye; it controls the size of the pupil.
What is the Iris?
A tube that extends from the auricle to the tympanic membrane and conducts sound waves to the middle ear.
What is the Auditory Canal?
Located inside the cochlea, this is the receptor of sound waves; it contains delicate hairlike cells that transmit sound impulses.
What is the Organ of Corti?
A structure in the inner ear that acts as an entrance to the cochlea and semicircular canals; it contains receptors for equilibrium.
What is the Vestibule?
This tough, white, fibrous connective tissue is the outer layer of the eye, often called the "white of the eye."
What is the Sclera?
A circular, refractive structure located behind the pupil that focuses light rays onto the retina.
What is the Lens?
The external ear, the visible cartilaginous structure, also known as the pinna.
What is the Auricle?
The three small bones in the middle ear (malleus, incus, and stapes) that transmit sound vibrations.
What are the Ossicles?
The state of physical balance or stability, maintained by receptors in the inner ear.
What is Equilibrium?
The circular, transparent part of the front of the sclera; it allows light rays to enter the eye and helps refract them.
What is the Cornea?
The clear, watery fluid that fills the space between the cornea and the iris.
What is Aqueous Humor?
The eardrum; it separates the outer ear from the middle ear and vibrates when sound waves hit it.
What is the Tympanic Membrane?
This is the action of bending light rays to focus them on the retina.
What is to Refracts (or Refract)?
This tube connects the middle ear to the pharynx (throat) to equalize pressure on both sides of the tympanic membrane.
What is the Eustachian Tube?
The jellylike substance that fills the area behind the lens, helping maintain the eye's shape and refracting light.
What is Vitreous Humor?
The innermost layer of the eye; it contains rods (for dim light) and cones (for color).
What is the Retina?
The middle layer of the eye; it contains blood vessels that nourish the eye and absorbs stray light. (Daily Double)
What is the Choroid Coat?
The movement of the eardrum when sound waves hit it, a crucial first step in hearing.
What is Vibration?
What is the Eustachian Tube?
What is Balance (or Equilibrium)?