-
What is the main function of the lens of the eye?
focus images on the retina
-
The image on the retina is
inverted and reversed.
-
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.
relaxes, contracts
-
Rods absorp light and ________ splits into _________ and ___________.
opsin, retinal
-
Rods see __________________..
Black and White
-
________ vision is dependent on three kinds of _________
Color, cones
-
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
the iris
-
Three types of cones, ______, ________ and ______
red, green, blue
-
_______ a disk where no ______ are present but the greatest concentration of __________.
rods, cones
-
The fluid in front of the lens is the
aqueous humor
-
Behind the lense is the _________
vitreous humor
-
Information from the eye is processed in the _______ of the brain.
cerebral cortex
-
Optic nerve carries the signal to the ________
optic chiasma
-
Fibers from the optic tracts neurons in the ________.
thalmus
-
The ear contains the sense of _______ and ________
hearing, balance or equilibrium
-
The receptors in the ear are _________.
mechanorecepters.
-
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.
tympanic membrane.
-
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
oval window.
-
The ______ connects the middle ear to the throat
eustachian tube
-
Three areas of the inner ear
the semicircular canal, vestibules, cochlea
-
Sense of hearing takes place in the ___________
cochlea
-
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
steriocilia
-
Mechanoreceptors within the semicircular canal are responsible for _________
rotational equilibrium
-
Mechanoreceptors within the vestibules are responsible for
gravitational equilibrium
-
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.
-
Glaucoma is
increase of intraocular pressure in the eye because of blockage of blood vessels in the eye.
-
age related hearing decline is called
Presbycusis
-
Otosclerosis is
genetic disorder where the shape of stapes is irregularly
-
irregularly shaped lens or cornea is called
astigmatism
-
Amnosia is
the inability to smell
-
ear inflammation caused by infection is called
Otitis media
|
|
