Ch. 7:7 Special Senses
choroid
middle layer of eye with many blood vessels
farsightedness
presbyopia
correct name for eardrum and what it does
tympanic membrane- separates the outer ear from the middle ear
hearing loss from lack of movement from the stapes
otosclerosis
nearsightedness
myopia
cochlea
holds organ of corti in the inner ear
retina
transport impulses to optic nerve
What determines the sense of smell?
Olfactory Receptors
a warping or curvature in the cornea that causes blurred vision
astigmatism
4 structures that protect the eye
bony skull socket, eyelids and eyelashes, lacrimal glands-tears, conjunctiva
nerves carry messages to the...
brain
lens become cloudy or opaque
cataract
cornea
circular, transparent front of the eye
iris
colored area behind eye
sound waves not conducted to inner ear
conductive hearing loss
contagious inflammation of conjunctiva
conjunctivitis
eustachian tube
connects to throat- helps equalize air pressure on both side of the tympanic membrane
5 parts of the eye that light rays pass through to focus on the retina.
cornea, aqueous humor, pupil, lens, vitreous humor
vestibule
entrance to other 2 parts of the inner ear
cerumen
glands in the auditory canal that produce protective wax
increased intraocular pressure caused by an excess amount of aqueous humor
glaucoma
vitreous humor
helps maintain shape and refracts light
the brain..and...to sensory messages
interprets and responds
aqueous fluid
liquid substance inside of eye that puts pressure on it to maintain its shape.
disease of the central and most sensitive section of the retina that is a major cause of vision loss and blindness
macular degeneration
conjunctiva
mucus membrane that lines the eyelid
pupil
opening in iris that flexes to let light in
infection of middle ear
otitis medea
Organ of Corti
receptor of sound waves
lens
refracts light to focus on the retina
Special senses occur because the body has organs that receive...
sensations
damage to inner ear
sensory hearing loss
crossed eyes resulting in weakness of muscles
strabismus
4 main taste andon tongue
sweet and salty:tip sour:sides bitter:back
name the three bones of the middle ear
the malleus, stapes, and incus
4 general sense receptors
touch, pain, cold, heat, and pressure
sclera
tough connective tissue
