Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
22 Cards in this Set
- Front
- Back
|
retina
|
inter,pst sensory tunic of eye; delicate, white, contains rods and cones
|
|
|
fovea centralis
|
lateral to each blind spot; tiny pit, contains cones; area of greatest visual activity, point of sharpest vision
|
|
|
ciliary body
|
two smooth muscle structures to which the lens of the eye is attached
|
|
|
optic disc
|
blind spot; part of retina that has no photoreceptor cells
|
|
|
lens
|
structure of the eye that focuses light on the retina
|
|
|
iris
|
circularly and radically arranged smooth muscle fibers which act like a diaphragm of a camera
|
|
|
we have receptors for what wave length of visible light (color)
|
Blue, green, red
|
|
|
list the order of structures that light passes through and enters the eye
|
Cornea, aqueous humor, lens, vitreous humor
|
|
|
proprieceptors
|
receptor located in a muscle or tendon, concerned with locomotion, posure, and muscle tone
|
|
|
gustary receptors
|
respond to chemicals dissolved in saliva; taste receptors
|
|
|
chemoreceptors
|
- receptors sensitive to various chemicals in solution
|
|
|
thermoreceptors
|
a receptor sensitive to temperature changes
|
|
|
mechanoreceptors
|
stimulated by the physical forces that cause movement of fluid or vibration in the body
|
|
|
olfactory hairs
|
- sense of smell
|
|
|
semicircular canals
|
contain dynamic equilibrium receptors which respond to angular or rotator movements of the head
|
|
|
eardrum
|
tympanic membrane; separates the outer ear from the middle ear; vibrates when hit by sound waves
|
|
|
list the order of ossicles that vibrations pass through
|
Malleus, incus, stapes
|
|
|
ear infections usually happen in what part of the ear
|
Middle ear; infections pass from the throat through the auditory tube to the middle ear
|
|
|
*Explain how the mechanism of hearing works based on the structures of the ear. Start with the pinna and lead to the auditory cortex in the temporal lobe
PINNA |
• Sound waves enter the pinna and are transmitted down the external auditory canal until they hit the tympanic membrane and cause it to vibrate
|
|
|
tympanic membrane
|
• Vibration of the tympanic membrance then causes the ossicles of the middle ear to vibrate, which in turn presses on the oval window of the inner ear
|
|
|
oval window
|
• Vibration of the oval window sets the fluids of the inner ear in motion
|
|
|
auditory cortex in the temporal lobe
|
• Movement of the cochlear fluids then stimulate the hair cells of the organ of corti, which in turn transmit impulses along the cochlear nerve to the auditory cortex in the temporal lobe, where interpretation of sound occurs
|
