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cataract

A ---------- condition in which the lens or its capsual becomes cloudy and opaque.

cornea

The --------- is the window of the eye and helps focus entering light rays.

eardrum

The --------- is a semitransparent membrane covered by a thin layer or skin on its outer surfaces and by a mucus membrane on the inside.

pupil

The circular opening in the center of the iris is the -------.

accomodation

The ability of lens to adjust shape to facilitate focusing is called --------------.

auditory

The second part of the ear is the s - shaped tube called the external ----------.

corti

the organ ------- contains the hearing receptors.

labyrinth

The inner earcomplex system of communicating chambers and tubes called a -----------.

iris

The ------ is a thin diaphragm composed mostly of connective tissue and smooth muscle fibers. It is the colored portion of the eye.

auricle

The first part of the ear is an outer, funnel- like structure called ---------.

retina

The -------- is the part of the eye that contains the visual receptor cells.

ossicles

The three auditory ---------- the malleus, the incus, and the stapes.

eustachian

The auditory tube, the ------------ that connects the middle ear to the throat.

sclera

The -------- is known as the "white of eye".

cochlea

The --------- functions in hearing.

lacrimal

The ---------- glands secretes tears and a series of ducts that carry tears into the nasal cavity.

vestibule

The ----------- is abony chamber between the semicircular canals conchlea.

equilibrium

The organs of static ------------- sense the position of the head, maintaining stability adn posture when the head and body are still.

extrinsic

Six ----------- muscles move the eye in various directions.

conjunctiva

The ------------- is a musus membrane that lines the inner surfaces of the eyelids and folds back to cover the anterior surfaces of the eyeball.

window

The oval -------- leads to the inner ear.

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