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25 Cards in this Set

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Theses are concentrated in the face, fingertips, and lips and tongue.
Touch receptors messner's corpuscles
these are deep in the dermis of the skin
pressure receptors; pacinian corpuscles
Where do sound waves enter in the ear?
pinna
another name for eardrum is
tympanic membrane
what are the 3 layers of the eye?
sclera, choroid, retina
this part of the eye is white;protection
sclera
this layer of the eye is blood vessels
choroid
this layer of the eye is la layer of rods and cones
retina
part of the Organ of Corti.
rubbing of hair cells against this......stimulates neveve endings to form nerve impulses.
Tectorial Membrane
Impulses are sent along this nerve to the temporal area of the cerebrum for interpretation
Auditory nerve
these decect head tilting and acceleration
contained in the vestibule they are called otoliths
in the eye light enters this...
pupil
cells of the___ regulate amont of light entering
iris
oval disc which focuses light on retina
lens
connect to the lens to regulate focusting by changing its shape
ciliary
fuction in dim light.
involved in black and white vision. contain rhodopsin
Rods
involved in color vision. contain cone opsin
cones
bacterica from pharynx migrate up eustachian tube to the middle ear. fluidd and pus accumulate in the biddle ear causeing the eardrum to bulge outward
middle ear infection or also callded otitis media
damage to eardrum or midddle ear bones. hearing aides amplify sound
conduction deafness
damage to haircells of the organ of corti. no impulses reach brain. caused by long exposure to load sounds. Treated by a cochlear implant
nerve deafness
clouding of lens resulting in less light hitting the retina.
cataracts
incressed pressure in eyeball due to excessive fluid pressure of aqueous humor and vitreous humor.
glaucoma
eyeball is elongated imfages from far away do not focus on retina
nearsightedness
eyeball is short close images do not focus on retina
farsightedness
lens loses flexibility and shape of lens cant be admusted from close up vision.
presbyopia