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68 Cards in this Set

  • Front
  • Back
change in environment
stimulus
what kind of receptors respond to pain?
nociceptors
sensing a stimulus as being from the body
projection
changing of stimulus into neural impulse
transduction
impulse travels along sensory pathway to brain
transmission
difference in perceptions based on comparisons
contrast
where are Krause's end bulbs found?
nasal epithelium
intensity is coded by rate of impulse firing?
sensory coding
where the stimulus arrives is called?
homunculus
susbstance P _____ pain
facilitate
smell structure?
olfactory epithelium
endorphins _____pain
inhibit
Glutamate _______pain
facilitate
Enkaphalins _______pain
inhibit
what part of the NS do pain inhibitors work
CNS
fast pain fibers
type a
slow pain fibers
type c
medicine that mimics endorphins
morphine
medicine that blocks sensory pathways
lidocaine
chemical must be _____to enter nasal cavity
volatile
what you taste is ____% of what you smell
80
mucous membrane of back of eyelid
conjuctiva
tear glands
lacrimal apparatus
______fluid contains antibacterial antibodies and lysozymes
lacimal
colored portion of eye
iris
whites of eyes
sclera
clear covering in front of eye
cornea
what part of the eye retracts light
cornea
the 2 types of photoreceptors
rods and cones
what part of the eye controls pupil size
iris
what photorecptors detect color and function in bright light
cones
what photorecptors detect light/dark and function in dim light
rods
point where optic nerve and blood vessels enter eye
optic disk
bipolar cells are ______neurons
sensory
pressure buildup due to poor humor circulation
glaucoma
region of very high acuity
fovea centralis
______ ________ maintains pressure which holds retina in place
vitreous humor
when the retina is not in place it is known as ?
detached retina
relaxation causes pupils to ______.
consrict
stress causes pupils to _______.
dilate
what is the term for near sightedness?
myopia
what is the term for far sightedness?
hyperopia
what is the term for normal vision?
emmetropia
outer layer of eye
fibrous outer tunic
middle layer of eye
vascular middle tunic
inner most layer of eye
sensory inner tunic
what structure holds lens in place and stretch it thin
suspensory ligaments
instrinic eye muscles that oppose ligaments
ciliary muscles
what part of the eyes are able to change focal points of vision?
lens
the innermost layer of the eye is also known as
retina
vitamin a derivative
retinal
what vision disorder is caused by a vitamin deficiency and impaired rods and what vitamin
night blindness and vitamin A
when rods shut down and cones take over this is known as
bleach out
lack of one or more cones would lead to?
color blindness
ringing in ears is called?
titinus
the vestibule, the maculae, utricle, and saccule are responsible for?
static equilibrium
what part of the ear is responsible for dynamic equilibrium
crista ampularis of semicircular canals
what is the hearing portion of the ear?
cochlea
ear drum is called?
tympannic membrane
jerky eye movements after rotation?
nysatgmus
problems in outer or middle ear is ________ deafness?
conduction
________deafness results from problems in cochlea or nerve.
sensorineual (nerve)
the organ of corti is the _______for ______
sensory for sound
the muscles tensor tympani and stapedius function to
reduce sound transmission to inner ear
hammer, anvil and stirrup are known as the
ossicles
bony labyrinth is filled with fluid ...
perilymph
________tube maintains pressure equilibrium.
auditory (eustachian)
inner membranous labyrinth is filled with
endolymph