In order for us to see the lens must accomodate both distance and near vision. It does this by changing shape using ciiliary muscles. The ciliary muscle ___________ for distance vision and __________ for near vision.
Rods absorp light and ________ splits into _________ and ___________.
Rods see __________________..
Black and White
________ vision is dependent on three kinds of _________
Color blindnesss is caused by
inherited absence of color pigments in the cones.
choriod layer _______________________
regulates the size of the pupil.
The colored portion of the eyes is
Three types of cones, ______, ________ and ______
red, green, blue
_______ a disk where no ______ are present but the greatest concentration of __________.
The fluid in front of the lens is the
Behind the lense is the _________
Information from the eye is processed in the _______ of the brain.
Optic nerve carries the signal to the ________
Fibers from the optic tracts neurons in the ________.
The ear contains the sense of _______ and ________
hearing, balance or equilibrium
The receptors in the ear are _________.
The external ear is called the _____
auricle or pinna
The role of the auricle is
collect and funnel information
The _____ separates the external ear from the middle ear.
three bones of the middle ear the _____, the ____ and the ______.
mallus, incas, stapes
The role of the middle ear is to
amplify the sound collected by the outer ear.
The ____ separates the middle ear from the inner ear
The ______ connects the middle ear to the throat
Three areas of the inner ear
the semicircular canal, vestibules, cochlea
Sense of hearing takes place in the ___________
sense of balance takes place in the ____________ and _____
vestibules and semicircular canal.
Within the cochlea tiny hairs serve as the mechanorecepter known as the _____
Organ of Corti
Sense of balance is controled by the _____ located in the ______
cristae ampularis, semicircular canal.
Sound travels by _________
vibration of air molecules
tiny hairs that vibrate inside the Organ of Corti that allow us to sense sound are called
Mechanoreceptors within the semicircular canal are responsible for _________
Mechanoreceptors within the vestibules are responsible for
Cataracts are caused by
clouding of the lense due to inadequate drainage of aqueous humor.
Age related macular degeneration is caused by
degeneration of the macula of the eye. loses the fine tuning of the sense of sight.
increase of intraocular pressure in the eye because of blockage of blood vessels in the eye.
age related hearing decline is called
genetic disorder where the shape of stapes is irregularly