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37 Cards in this Set

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  • Back
general sense organs
sense organs that are widely distributed throughout the body and sense stimuli such as pain & touch
special sense organs
responsible for for the special senses of smell,taste, visionand equilibrium
sclera
a tough, fibrous layer of the eye that is "white" on its frontal surface
cornea
another part of the frontal sclera, referred to as the window of the eye
iris
colored part of the eye
what happens to the sclera when a person has a dysfunction with the liver or gallbladder
turns yellow, ecteric
conjuctiva
mucous mambrane that lines the yeylidsand covers the frontal part of the sclera
lacrimal gland
keeps the conjunctiva moist by tears
choroid
middle layer of the eye, wich has dark pigment to prevent scattering of incoming light
pupil
doughnut shaped hole in the center of the iris
retina
the inermost layer of the eye
lens
directly behind the pupil
ciliary muscle
it distort the lens to allow it to focuson objects near and far
caract
condition that causesthe lens to become cloudy and less transparant due to aging and uv light
photoreceptors
detects changes in light and relay the info. to bipoplar neurons
the 3 types of cone sensewich 3 colors
red
blue
green
aqueous humor
watery substance in front of the lens that is constantly being formed drained and replaced
glaucoma
disruption of circulation can cause a pressure build-up resulting in blindness
vitreous humor
jellylike substance behind the lens, filling the globe of the eye
where is the blind spot of the retina
where the optic nerve is
why do we have 2 eyes
to offset blindspot and for depth reception
where is the visual info sent in the brain for interpretation?
the occipital region
what happens if the retina dettaches from the choroid layer
i
2 main fuctions of the ear
hear
balance
mechano receptors
receptors in the ear that senses vibration and fluid movements
medical terms for the ears
pinna or auricle
tympanic mambrane
-(eardrum)is aproximately 1" in length
-it separates the external and middle ear
middle ear
-located in small cavity, just inside the temporal bone
-houses 3 hearing bones:
-hammer-anvil-stirrup
what is otitis media?
inflamation of the middle ear
(swimmmer's ear)
the_____________canals are 3 rings that are at right-angles to eachother
semicircular
hearing is sensed it the ?
acoplia
(taste) made up of approximately 10,000 receptors categorized as _________ receptors on the tongue
chemo receptors
for main senes of taste
-sweet
-salt
-sour
-bitter
smell receptors are categorized as?
chemo-receptors
Specialized receptors found near the point of junction between tendons and muscles are called
proprioceptors
Cones are densely concentrated in the
fovea centralis
As people grow older, they tend to become farsighted. This condition is called
hyperopia